Van,
You have two choices when refinishing your boat, one is to spray gel coat. Nice video Jeremy!
The other is to paint.
If you are just doing the bottom, then gel coats is the way to go. If you want to redo the whole boat, you might consider paint. Its not as durable as gel coat, but it has a richer, deeper finish. If you use paint, use a two part polyurethane marine paint.
Gel coat needs to be buffed out, paint is ready to roll once it dries.
If you use paint and spray, use a quality respirator, the 2 part poly paint can kill you if you breath it.
Bill