Also does any one know whether there should be any sort of bulge in the hull where the mast would go ( it looks like reinforcement but original)?
Just an FYI the quickdrying 5200 is 3M 4200.....
[4200 vs. 5200]
Neither product is appropriate for repair of a separated Laser hull deck joint. The deck joint on a Laser must be made with stiff material or the entire boat will flex.
Either 4200 or 5200 is an appropriate sealant for filling small gaps in the bonding material.
Neither should be used to bond any significant length of broken seam.
Thanks everyone for your replies...
All the best,
Rich.
You've certainly repaired more boats than me and I respect your experience.
But have you seen how hard and stiff 5200 sets up?
Consider a 3/4" x 24" bonding area along an extended seam.
I challenge you to take a 2 foot long piece of 1x2 and glue it down along its skinny edge to a thick piece of scrap plywood with a bead of 5200 then clamp it until it sets. Do another similar piece with epoxy.
After everything's cured, try to identify any distinguishable "flex" in one joint vs. the other, short of complete failure of the glued joint.