Closest thing we have to skeet shooting angles and speeds is sporting clays. That's a bit of a step-up, depending of course on ones preferences & beliefs. I'm sure she's like trap - but I had quit 30 years ago due to the costs involved and 'ol Dad can't afford to get into THAT game again. It isn't getting any cheaper I don't imagine. A few boxes now and then isn't bad, though, but that's not the way to become proficient.
Now, to get Taylor's Manton & single 20 bore out shooting some informal handthrown clays, that's different. Our black powder section has a fairly good trap, but the hand throwers Taylor and I built 25 years ago, are better as to the variety and speed of flight. We put 3' handles on them - you want to see fast?(if you want, of course - doubles too)
I used one to train my perimeter and riot squad members to teach them to get on the birds fast using the M870's with trap loads, then graduated them to 00 buck shot. Some of the guys excelled - one in particular, my best friend for 29 years now & fellow guard for 20 years - deadliest wing shot going --- now. Only took a couple boxes to take him from ground sloucer on ducks, to deadly on birds, decoyed or pass shooting and a few more to excel using a riot gun with buck shot on the wingless variety. When using buckshot in a cylinder bored, short barreled pelter, one must be fast getting on them. This style of shooting teaches not using the sight at all, which is my preferred method personally, both eyes open, looking at the bird only, point and shoot. I leave the 'bead's too high, bead's too low, beads wrong colour" to the trap shooters. I like taking them just 'over the house'.