Re: Sikaflex Carvel Planking
I've had good luck using a softer formulation like Sikaflex 291 LOT to patch limited sections on batten seamed hull sides. This Sikaflex matches seasonal expansion and contraction very well. With wider seams you may find that that topside paint will crack along these seams after several seasons, but the sealant remains intact. Repair is easy if a full re-coat is not needed. Along more narrow seams I haven't seem any cracking of the coating.
"Whiskey is for drinking, water is for fighting over." -Samuel Clemens