Any word on the Krylon holding up? I was going to purchase a paint gun for the air compressor, but I've found more and more jeepers out there who have used the rattle can method. I may have to give it shot!
As a custom painter by trade, I would pretty much ONLY use automotive grade paints. Krylon fusion is made for plastic...and since the hardtop is already painted, the proper steps were already taken to ensure good adhesion.
I'll admit, I just rattlecanned my a couple weeks ago to freshen it up quickly...and I left it right on the jeep and just masked off with some tape and painters plastic. I did use VHT epoxy paint which is black satin and self-priming as well as resistant to salt so figured I would see how it lasts over this winter....
Now, once I put the soft top on in the spring, here's how I will do it:
1. Prep the surface by scuffing it with a grey scuff pad then degrease
2. Apply black sealer (why sealer, because I can paint it wet on wet)
3. Black Base
4. Clearcoat! Yup, for sure....
I will probably add a flattening agent to the clear to give it a satin finish....may even use a matte clear and just hit it with enough coats till it develops a satin finish (more coats of matte clear, the more gloss....so with 4 coats of clear, I'd probably be satin to semi...might just need 3 coats.
The biggest reason I'd use clearcoat is for the UV protection, and would certainly hold up better and longer than a single stage black with clear mixed in...