I also saw a guy that used ping-pong balls. He said after ten years it looked the same as when he put them in.
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I think you will find that a good number of people here did not put foam back after a stringer repair.
Coast Guard regs require flotation in boats, but exempt those over 21' (at least I think it's 21'). It's not like you're gonna get pulled over for a foam check, but might get sticky with insurance if it ever sunk & regs required it & you didn't have it.
Otherwise I think it's personal preference.
Pro's - could be the difference between swamping & sinking, adds some strength (still convinced it was the only thing holding my Saltare together), sound insulation for a quieter ride.
Con's - notorious for eventually becoming wet, holding moisture, & leading to rot, added dead weight once it's wet (could be a pro if considered as permanent ballast :)), added cost, added mess.
Sure, it might take 10-20 years for it to get saturated, & properly sealed structure (unlike the factory did 20 years ago) will last a long time even with wet foam. Also, look at Salty87's thread for his novel solution which could help as well. That being said, I went foamless just cause I wanted the boat to be able to dry out down there. If you go foamless, don't forget to add some limber holes at the bottom of the stringers so water isn't trapped.
Wait!! Soaked foam in the floor? 10'Lx6'W=60 sq ftx8lbs(water)=480lbs of BALLAST!! Leave it!! LMAO! Jet
Hey rlhahn. I sure need a few pictures from up under that nose, top and bottom...PLEASE???? I want to cut a whole in my nose/divider so a sac can go across side to side on there. Check out my resto pic's below and if you need anything pm me or call. Jet
I wonder If this boat had foam (not a Supra by the way)
This is what happens when you try to fit 30 people in a boat built for 8.
THANK YOU!! OK so the divider is attached to the top not the floor?? I just tore my floor up today, Im right behind you. lol
We need to move this thread to service and repair?? Mikey? Can we..I think more people will find it. I couldn't even remember where I saw it at, I had to go into user cp to find it. Jet