repainting my gel coat skin

I have sprayed some boats here in my yard using a paint called Trilux. It is designed to go over gelcoat and is a one coat cover, no clear needed afterwards. It gets really hard and durable, I recently saw one that I did 12 years ago and it still looked extremely shiny. I even painted my own 32 ft. Wellcraft which I have since sold to a friend, 10 years later it too looks great. All I used was a small compressor to apply on this before I bought my bigger setup. I am thinking of spraying my MH, gelcoat is gelcoat right? Preparation is the key to any paint job....
I remember the first one I did, I had no clue what I was doing but I took my time and it turned out just fine.