Unless you have twin screws or a bow thruster, most boats don’t really back up with a ton of control.
Less throttle in reverse also means less transverse thrust (or prop torque as some here have called it) which will pull the stern to one side or the other. Usually to Port with a right hand turning prop or to starboard with a left hand turning prop. However, the less way you are making the more susceptible you are to the elements, so it’s kind of give and take, enough juice to make reasonable way through the water, but not so much that transverse thrust takes over. Once a single screw boat starts turning one way or the other in reverse, most times the only way to stop it is to go ahead with opposite rudder to sort it out. I’m sure most have experienced backing up and the boats stern is going to port even though they are hard to starboard.
Coming in hot looks cool until you run out of talent, and you will, one day. And if you come in hot and hit the dock because the linkage broke that puts it in reverse, or the steering fails, or the engine stalls, the extra damage done by coming in hot instead of easy is still on you because something will break, one day.
There’s not really an easy answer for windage and current. If you don’t have to back in, don’t on those days. Maybe go in bow first and get a line on and turn it around at it’s berth. I’d rather crab in almost sideways going super slow in and out of gear ahead than try to muscle something in backwards, which I admit looks cool, until it doesn’t.
My dad had a 42’ mahogany boat years ago, one engine failed and it had to go down a long tight finger dock and then back into position. We had a small rubber dingy and used it like a tug on the bow, worked great, so there’s always that in horrible conditions if necessary.
There might be a day where you decide you just can’t go in due to conditions and you’ll have to tie up somewhere else or anchor. Less shame in that than doing damage!
Sounds to me like it’s not you Walleyes, it’s just the reality of the way your boat backs up. In my opinion learning how to control a boat using only dead slow ahead or astern at the dock is the way to go, with extra throttle being reserved for challenging conditions.
Those silly videos of east coast crab boats in high throttle “dock like a boss” competitions are best left for competitions where coming in hot and bumping the pilings isn’t embarrassing like it would be anywhere else.