What you the the EXPO was A SHELL MODEL which comes partially prewired.
If you look at the pics above you see a finished one.
I don't know where you get that i use a balsa core????
I only use foam core with unidirectional hand laid fiberglass reinforced with carbon and kevlar.
And NO; i won't give you my lay up schedule....
We had a piece at the show ; we even let people hit it with the hammer.
Sorry Marc, didn't mean to ruffle your feathers. I'm only asking the questions I'd ask as a prospective purchaser and I was standing right in front of you. If the questions make you uncomfortable then something's wrong.
I said either balsa or foam coring..either can get water in them. I wasn't shown your sample at Expo, nor did I just ask you for your lay-up schedule.
What i asked was, and I'll repeat it, what measure do you take to prevent water entry from any "hull" penetrations??