No hand cards - have you tried using dog slicker brushes? They work almost as well as "real" carders, and are much cheaper.
I couldn't "get" long draw until I got my first AA wheel. My Ashford and I just couldn't connect....I sat down at my scottish wheel and something just clicked.
You can long draw with roving - I pull off a bit, fold it over my pointer finger, then treadle while pulling the hand slowly back. When the twist starts up, I pull back faster, keeping just ahead of the twist. The wheel does all of the work. You can also take a piece of roving, and roll it up in a sausage starting at the "torn" end and rolling it up the length. It makes a faux rolag - to spin it, pull a little bit out of the center of the sausage and go.
:thinking: I have a double drive wheel, and it's set up to draw in the fiber pretty steady; not hard, but if I let up on the tension it goes right on. Not so much that it yanks it - and I can pull the yarn back off the bobbin while treadling. It's just high enough to tug on the fiber, if that makes sense.
On the Ashford, I didn't have the tension set right - it was either way too much or not quite enough. It took a bit of fiddling....I've tried it on a ST wheel (Ashford Joy) and it was a bit frustrating at first, because the stupid brake band was either too grabby or not enough.
Once you get it, though.....yarn flies onto the wheel without any effort. It's magical.