I'm hoping this is correct. I didn't scrub down very far because I
stopped when I kept getting so much black paint.

Wait, paint? It's colored gelcoat, is it not? It's important to call it by
the right name if you want advice on fixing it the right way.

So where do I go from here? I assume I need to get that 3M wax off. My
search showed alot of praise for Zaino and that I should wash the boat
down with Dawn to remove old wax first. Some prefer traditional wax. I
don't mind doing the entire boat since like I said it's been outside
for a year.

Where are you getting these ideas? Dawn dish soap? JUST STOP. I'm sure
there's any number of wives tale solutions out there. But you'd really do
well to use products intended for the job.

Poliglow works wonders on rejuvenating a tired finish. If not that then
Collinite makes a fiberglas cleaner and wax.

But given the adventures thus far, it really does seem like you ought to
have someone that KNOWS fiberglas come take a look at what you've done.
Don't keep making it worse by doing the wrong things. Especially not to a
brand new boat!