Here is a link to a reasonably good video of loading a boat........notice the speed he is approaching the trailer at.
Also I don't recall if you said so, but if you have the pvc covered guide posts it makes it even easier, plus once you figure out the correct depth you can mark the guide post with tape....it makes a easy visual aid to how far to back in....Also when testing to figure out everything it is much easier if you have someone in the tow vehicle that can back further in or pull up a little to just the right depth.......
The video link didn't come through ?
Even though I wasn't totally successful this time, I'm learning volumes. In the long run I hope it will make me a better skipper. (I often feel you get worse before you get better.) I think Im on the right track anyway.
My wife was in the truck giggling at me (wait till its her turn to learn how to load it - LOL ) and she would reposition the trailer as requested. I am using the side guides as a reference now (I have fabric covered guides) and I think I have how deep the back of the trailer needs to be, worked out.
My approach is still the difficult part. ~~Pilot time sounds like the long term answer. I read a lot on bow wander last night and that it is just characteristic of a v-hull with IO and OB at low speeds. I am most certainly overcorrecting for wander and currents. Reverse causes the bow to move far more with the same input. the combination is fun. The tips I got here are great.
I have a few other things to try next to reduce wander
1) Im going to trim my OB UP
2) use extremely small steering inputs and wait for the bow to respond (get a feel for the delay)
Last resort if the ramps were busy I could always drop the bow mounted trolling motor and pull it onto the trailer that way (my neighbor does that)