I always love Future as a topic. I apply it after the car's been cleared with the real stuff. I use this...
I use Duplicolor clear (enamel in a spray can) and it works great. Polish out the enamel first, get it as pretty as you can and then apply 1 coat of Future using a brush. I've airbrushed Future on this car...
and I wouldn't say it was great. It made the white/yellow/orange turn into one colour, that's for sure! (I use Creatix AutoAir colors) I've also found that certain enamels react badly with the Future. I think I used high heat enamel on one car and after applying the Future it all started to get major spider webs across the entire body. Nuts! A little Windex and some hard scrubbing and it came off. So it is a good idea to be careful what you're applying it over. Lacquer probably isn't an issue.
So, anyway, I was gonna show an example of what Future does. This car started out looking pretty good. Not great, but good. I decided I'd try polishing it as it's from my pre polishing kit days. It didn't look too bad after polishing, better than before, but then I got to thinking. What would Future do? I'd tried it on a few other new builds, so I brushed one coat on this too and wow what a difference it makes! I think the pics speak for themselves.
this is before
During...
And after...(fender has Future, door just polished)
I hope that helps a little. I was told by another builder to try an industrial floor polish. He uses it as his only clear and it looks from what I've seen of his builds to be excellent stuff. Can't remember the name of it though. In any case, Future is probably best used as a clear over a real clear. That's my 2 cents anyway.