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Removing Jon Boat Bench Seat

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 Posted 7/18/2010 10:46:14 PM
 

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Just bought a new boat and Iam wanting to remove the middle bench seat.  It is a 16'5" mod v jon boat with one bench seat splitting the rig.  I couldnt pass up the price and figured the bench seat would be an easy removal.  Looks like there are 4 tack welds across the bottom of the bench and the sides are rivetted.  Looking for some advice on how to go about this without compromising the integrity of the hull and structure of the boat from some of you that have done this.

Thanks

Post #735857
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 Posted 7/19/2010 12:33:33 PM
 

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Haven't done it but isn't there styrofoam in the seats? It might make your boat not float as well.



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Post #735893
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 Posted 7/19/2010 1:52:05 PM
 

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The foam would only help it float if you swamped it.  I'd be affraid to say yes or no without a pic.

"Chris....l-o-a-d your gun...."

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Post #735904
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 Posted 7/19/2010 6:09:04 PM
 

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well if you do it right you should be able to remove it and if it seems like you shouldnt have just put it back in.

A man who can distinguish a drake from a hen when there flying 50 miles an hour a hundred yards away sees something most men can't.
Post #735926
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 Posted 7/19/2010 6:46:04 PM
 

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There is styrofoam in the seats however the previous owner already removed a large portion to create a livewell/storage area in the seat.  Basically it would render the boat illegal however i have seen many boats with this modification and I dont think anyone would notice/care.  I just wanted to know the best way to go about this.
Post #735930
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 Posted 7/25/2010 1:30:29 PM
 

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I just did it to my 14ft jon boat and it didnt seem to weaking it at all. in fact we do it to all the boats we use for hunting makes a little more room so it not so crowded. I just used a grinder and grinded the rivited heads off and popped it out wilth a little pry bar took all of 5 minutes.

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Post #736351
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 Posted 7/25/2010 2:01:14 PM
 

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What state are you in that requires the seats to have foam?  Got to a northern state they seem to like laws and restrictions the most!

"Chris....l-o-a-d your gun...."

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Post #736352
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 Posted 7/28/2010 4:57:01 PM
 

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NO NO NO NO NO Don't do it, the bench seat in the middle is part of the boats structure and it supports a hell of alot more than meets the eye. We did this to a 14' buy 52" aluminum boat before and it was all down hill after that. Broke 4 of the ribs and i can't even count the number of rivets that started to leak. Bad idea but if thats what you want to do then here are my suggestions. Buy 3 or 4 extra ribs from the boat manufacture to be put from were the Mod V hits the flat bottom back between the existing ribs to create the support needed from the missing seat. Don't try to fill the old rivet holes with any kind of silicone or JB weld solution take it to a shop and have them spot weld the holes with a tig. The seat supports the sides of the boat and the foam really dosen't matter, but without the support on the top of the sides they have a tendency to bow out and thats when stuff starts breaking.

IF IT FLIES, IT DIES, THEN IT FRIES
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Edited: 7/28/2010 4:58:20 PM by Son-of-a_shotgun
Post #736608
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 Posted 7/29/2010 7:58:51 AM
 

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It must depend on the brand boat you bought as to whether it will be structurally sound if you take the middle seat out.....we took the middle seat out of a Lowes 16' over 20 years ago and have had NO leaks and No structural weakening from it....mini-grinder and a pry bar, and maybe a hammer, and 5 -10 mins is all it takes....we just ran stainless screws (ground flush after the 5200 sets up) with 5200 into the rivet holes and the boats been swamped with both a long tailed mud motor and the 25 outboard many times (yes, tides, hurricanes, getting stuck under a dock on a low tide, and BIG wave over the stern and in saltwater too!) and it still does not sink even tho the middle seat foam is missing. Just take your time and don't grind off anymore metal than you have to. I've seen other jon boats that didn't have the middle seat removed that were so crappy structurally I would not get in them, so it really depends on the boat you got and how thick the aluminum hull skin and rib structuring is, as to how "safe" or "legal" it will be when you finish the mods. If you can punch the hull skin and dent it, better leave the seat in...if it breaks a knuckle, go ahead!


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 Posted 8/1/2010 1:07:03 PM
 

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I have removed the middle seat from a 16' flatbottom, and the manufacturer said that, that one seat provided 80% of the boat wall strength.  The foam doesnt matter at all unless your are swamping the boat.  If you are putting wood floors in the boat I might suggest putting foam under the floors to make up for the seat.  If you have your mind set on removing the seat I would order some extra ribs and put them where the seat used to be, but Instead of removing the seat I would open it up, tear all the foam out of it and make it decoy and lifejacket storage. 

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Edited: 8/1/2010 1:08:19 PM by Tkopperl
Post #736966
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