OK, I've done a few more mods to my wheelie trainer, and painted it. changed to a 20" front wheel. Helps a lot with handeling and gets the front a little higher and closer to wheelie mode.
I can shift my weight back a little once I'm
rolling, and easily do power wheelies at 5-10mph with throttle control. It has a definite rightturn when the nosewheel is up, because of the engine hanging off the right side. Been experimenting with a counterweight,seems to help.
I still need plenty practice before I can keep the wheel up for long without dragging my feet, or make a video.