"...but it's a really involved process to do all this and get a good result"

Yes and no. What are you trying to achieve?

If it's perfection then Jake is right 100%!

If you just want a sound boat for recreational sailing, and you are going to be dragging the boat on the beach, you don't need to be nearly so fussy. You can even apply gel coat with a roller. . . or not at all!

I had an old H16 that was more beer drinking platform than racer. When the bottoms needed to be done, I only sanded the repair with 80 grit and left them unfinished. The boat sailed just fine, and after a couple of "hard" landings you couldn't tell what the bottom was finished with.