I used two part Perfection Paint and it has held up well for 6 or 7 years. Applied with roller and brush. I paid 300 for the kayak and refurbished every thing on it except aluminum rudder.
Wow you made one look like two!
Restored one is yellow Extreme the blue one is a 08 Solstice. I have to find some pictures of what it looked like when I bought it.