That’s the million dollar question. I’m not 100% clear on the application you are wanting to use a clear for as ya confused me with weights and hooks being painted/cleared.
Powder paint in itself mixed with clear powder paint will give you a good shine. If you want to take it one step further you can dip in clear powder paint before you bake to give it that extra pop. I don’t like sally Hanson hard as nails for anything. CSI clear coat is alright but peels off. I have used Solaris and bone dry UV. Solaris is tacky to me. Bone dry is great. Both require good UV to harden. I use a UV flashlight to set up then sit out in sun for 30 minutes. BSI is a 2 part epoxy that I hear is great. I have it but have yet to use. I also have KBS Diamond Finish. It’s great but man expensive and leftovers can harden quickly if not stored properly. To date KBS has been the best for me. Alumilite is another UV I hear is great and probably the only clear I haven’t used.