Steve- I have a similar issue, perhaps not as severe as you describe yet very recognizable. I too use the fly bridge when docking. The vision 360 is worth the effort in leaving the bridge to stepping on the float to secure. Here is what I do (Have described this a couple of times in the past so faithful readers bare with me for Steve's sake.
When I enter a dock provided harbor, I motor in easy and then stop some distance from the dock or float. Once I have the drift current indicated then I can choose which side to land. My boat backs to the Port so I prefer a Port side landing. When I have the length of the float space zeroed in I begin the mental calculations to judge the speed to approach. Sometimes with wind more than current I will make a more power driven approach with the intent of backing down hard again, to the Port. Now in either choice power, or creeping in, our common issue comes into play. How to secure the boat without loosing position . Here Steve is my solution and it works like a charm. (Note: In Alaska most floats have what is called "Bull Rails". usually 4x4 up to 8x8 railings that line the float circumference. We tie our lines to and under these bull rails. Lacking these then the application I am going to make will be to the other side of the float, given space and no boats in the way.
I purchased the following item off eBay:
https://www.amazon.com/Fury-Martial...=2025&creative=165953&creativeASIN=B0009PGVG8
It has a 35 foot nylon cord as you can see. I have a 2.5 or 3 gallon plastic pail with holes cut in the bottom to allow rain water escapement. The grapple is coiled in this bucket which I can move about the bridge for comfort in the throwing act.
When I have completed my backing down action and the boat is settled in one spot, I sling the grapple to the bull rail and hood it under this rail. I can now walk back and forth on the bridge positioning the boat.
I secure the line somewhere convenient on the bridge, hand rail, seat, where ever. This allows me time to exit the bridge and secure the lines.
There will be those who picture this act causing untold damage to other boats, death of onlookers, and such. Well Steve, the "dogs bark and the caravan rolls on"! I have been employing this process for some 7 years of single handling my current fly bridge boat without any issues other than shock from stateside visitors unaccustom to seeing such employment. Alway worth the quite smile I have seeing the look.
forgot to add: I have secured the hooks in a permanent open position using plastic ties.
Al-Ketchikan