What John, Jack, and Tick said.
My 2 cents, like John, I clean up the part first.
I have a bottle of diluted "Future":distilled water at 1:1 set aside just for dipping. I find cutting it with water helps with the dried runs you can get. Also, after you dip, wick the edges. I use the edge of a paper towel I've ripped into a little piece.
And finally, I think the reason folk use Future to dip is same reason they use it in the first place. It's cheap. I'm one of the few non-Future fans here (mostly because I have no idea if it is even the same product it was back when Swanny created the craze.....and the label has changed so many times, I'm tired of chasing it), but I still have it on hand for dipping and the occasional clear coat if the mood hits me.
All moaning and groaning aside, dipping clear parts in "Future" really does produce a nice showroom new-glass look if that's what you like. I like the look too.