> If you've got big enough end pours, you do not have to place a tube
> insert. You would still want to seal up the now open plywood of course.
> Chafing in the hole is not a problem, at least if you drill reasonably
> well it won't.

> I personally chose to do a tube insert for the heck of it and because it
> looks cool to me.

> I simply eyeballed where I wanted to drill, drilled the holes, regretted
> not being a bit more carefull to ensure they were straight, stuffed a
> copper tube to mark for cutting, cut it, stuffed it in there again, this
> time with epoxy glopped over the outside, wiped up the excess epoxy that
> squished out, sanded the tube flush with the hull and then painted. You can flare the ends of copper tube with a flare tool or any tapered or round gizmo that will fit in the end.Looks good and adds waterproofness(new word,first used here-history in the making)