Update: I completely reglued the tubes to the hull. It took some preparation, but overall wasn't too bad. Here are a few pics. I did it mid July, and used the boat for the rest of the season a few times a week. I just stopped going out last week (1st week of november) because its getting too cold- even with a wetsuit. Took it out in the surf a bunch of times. Even flipped it in 8 foot surf, messing around (that was fun!) I was able to kill the motor before we flipped totally so the motor was fine. With 15hp, this thing is fun! 21mph loaded with 2 people and 75lbs of gas and fishing gear. 3 people put it over the limit of being able to plane. with just me, and no gear i got 24 mph, which is too fast for this boat.
Its safe to say i'm hooked on ribs, and I'm in the market for something bigger (a 5.4 searider maybe??)
For those looking to glue pvc boats, i'll describe how i did it.
For those of us in the US, where bostik products are very rare, I used a product called stabond. I ordered it from NRS. There are many writeups on how to use these glues, and i cant stress enough to follow them strictly. I used it to bond the pvc to pvc and also to bond the pvc to the fiberglass hull.
The time was in the preparation. It took me alot of hours to sand / grind off all the old glue. I used a dremel with a bunch of different attachments, an orbital sander with 60 grit paper. there is no easy way around it, youll need to spend time grinding it off, and gently to prevent grinding the actual pvc away, which i did in a few spots. once that was done, i purchased new pvc material from my local zodiac dealer to make new attachment strips.
I used a dehumidifier in the room to lower the humidity as much as possible. With the hygrometer really low, it was time to start gluing. The fumes sucked, but i had a fan in a window blowing out to try and help. Once both pieces have a few coats and are allowed to dry for 15 mins, when you stick those two together they will not come apart very easily. It took me 7 hours to completely reglue it while sticking to 3 coats of glue and the time inbetween pieces.
take your time and do it right! I abused the heck out of this boat the entire summer, and it took everything i threw at it. Can't wait for my next project.