bituthene vs. welding
I've been doing some soul searching about age old question of what to do about a cracked boat and want to revisit the subject once again.
Recent old school fix seems to be to slap some bituthene on the inside and talk about how tough and sticky that sh-t is. Disadvantage seems to be that the crack can still propagate even by drilling out the holes and it can tear through the bituthene, but I've seen some people have success with smaller cracks.
Welding seems to be having a resurgence, but the results I've seen for welds underneath the seat have been questionable. They frequently re-crack, and I've heard another argument that the plastic around the weld tends to get stiffer and will cause the boat to crack right next to the repaired one. The advantage seems to be that you can fairly easily re-weld to the crack.
I'm looking for some accounts from personal experience. For cracks **under the seat** where you know you're going to take hard hits and major flex, has anyone had any long (er) term success with either of these methods? I'm especially interested in anyone that's done a weld **under the seat** and had it go for more than a few days of creeking under the seat.