Those of you just getting acquainted with #16 are in for a treat, it's really great stuff. It's "the paste wax that turns liquid" when you work it; and that makes it perfect for application via PC/etc.
After you rub the applicator around in the wax (it'll turn liquid if you do it fast enough), rub the applicator together to distribute the wax evenly. Then, try to squeeze as much wax as you can *back out of* the applicator. It doesn't take a dime-size amount of wax to do a hood, you need far less than that, so try to use a *little* wax as possible.
When applying subsequent applications/coats, I like to do a pseudo-spitshine where I spritz a *little* cool/chilled QD on the panel and then apply the #16 via machine, mixing it in with the tiny bit of QD and working it until there's only a thin film of wax residue lest. I don't work it until it disappears (as with a *true* spitshine) but I do spread the product out over a large area so it's very, very thin. What's left buffs off easily, but don't miss a spot...by the time you do the next wash that unbuffed #16 will be *VERY* hard to buff off.
I really can't overemphasize the thin application thing..I refresh the #16'ed vehicles frequently, so I use this product a lot. But a can still lasts me years and years, the last one lasted over a decade. Putting it on thick is just asking for problems, besides being a waste of a hard-to-find product. You should be able to wax a lot of Suburbans/etc. before you can really tell you've used any wax at all, and when you get down to just a tiny bit left in the outer rim at the bottom of the can, that's plenty to do a full-size sedan (including doorjambs/etc.).
I don't think the 845 is just a liquid version of their paste waxes, it seems completely different.
Putting *any* LSP on thin is the key to good results and easy use, paste or liquid. Try the tip above, about squeezing wax out of the applicator.
The pastes are a little more work but I've never found them a real PIA or anything like that.