Re: Which Glue?????
Many many previous threads on this topic here, well worth searching the forum. Different glues are better for different applications - you need to be extremely specific when asking questions about adhesives. For thin strips glued together and then covered with fiberglass and epoxy, white glue or similar glues are fine. For massive planks or beams you'll want Epoxy and Resourcinol. For quick and dirty above the waterline with lots of filling properties, PL Premium is usually fine.
So when you say "Build my 19' sailboat" - what materials, plans, uses, budget, etc???? Otherwise might as well ask "how long is a piece of string", or "Do blondes or brunettes make better wives".
"The enemies of reason have a certain blind look."
Doctor Jacquin to Lieutenant D'Hubert, in Ridley Scott's first major film _The Duellists_.