All that said, I would use 5200 so the keel would break in half before the
seal will be jeopardized.

I am sorely tempted because I laid up my own hull and built my own support
frames. 5200 would add a layer of comfort. OTOH, the strength of a
structure is limited by the weakest component. If the 5200 bond is stronger
than the glass layup or the core material a small wiggle might cause more
damage than a simple leak.

Besides 5200 has a magnetic affinity for human flesh and any bright white
surface. :-)

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com