50 foot dock dilemma

The one I run has an extended swim platform on it. With that it is inches under 60ft. I would say realistically overall the 53 is actually 54ft long from the pulpit to the end of the swim platform. The hull itself is about 1.5-2 feet shorter then the swim platform.

Not having a whole lot of information, first blush, I'd attach a 2 foot wide x 8 foot long floating platform at 90 degrees to the 50 footer, so that you can back stern to, and still have dock to step out on.

Can't you dock it the opposite way so the bow is sticking out?

Any chance you could modify the guard rail to form a gate and run a set of steps or a ramp up to the side deck?

rAccording to Boat Test the 53 Voyager has an 53' LOA, but that's not the end of the story. The LOA is the entire length of the vessel, not including any add-ons such as swim platforms and bow pulpits. You won't find many bow pulpits added to these boats, but swim platforms could vary from 9" to 6'. So you'll need to check individual boats.
Are you going in along a face dock or into a slip w/ a finger? It sounds as if you're talking about going straight in toward land alongside a finger. Is what's ahead sand/muck or rock? If the former you can probably dig the baw in a bit. If the later you don't want to be anywhere near it. Also consider the flare of your bow. Your real number may be LWL and not LOA. Keep in mind also that your lines stretch, pretty much up to 1/3 of their length. I'd recommend that you do not count this in inches, and instead stick with the 46 on your 50'dock. However, you may find it possible to extend your dock (possibly without permits) by adding Jet Docks to the end. These are easily removed blocks. How far can you back in before you get shallow. Possibly you could put in pilings or a mooring ball to take care of the bow.
I saw your statement that you have difficulty boarding due to a disability with your leg. Can you climb steps? If so maybe a set of steps will enable you to board from the side.
As you can see there are a lot of variables to consider (more than we here have available to consider). This isn't a car fitting in a parking space. It's going to move when the wind blows. Another thing to consider is if your dock can even hold the weight if a strong wind tries to blow your boat off the dock. Will your dock hold it or might you lose boat and dock? In theory you could dock a 50 footer on a 10' dock, but I'd hate to have my boat there when a gale blows through. The best advice I could give is to give yourself at least a 20% margin for error. If I had a 53 (or even a 46) on a 50' dock long term, I doubt I'd sleep very well.

P.S. When I was in Cleveland this summer with the 56 Hatt a squall blew through. I had the boat cinched tight with lines doubled up. Despite that our boat (74,000 lbs) was held a full 6' away from the dock . There was no rest until the squall had passed.

And it floats how much while being welded to the wall?

Why not just Mediterranean moor it. Anchor the bow with a good anchor and tie the stern/swim platform tight to the floating dock with good fenders.

Don't think I've ever seen anyone Med - moor a small boat in this country for any length of time. Doubt I'd be happy as their neighbor given the lack of docking skills I'd have to call average.

I see people do it even down here in Fort Lauderdale. Several boats do it on the middle river..... It's an option and a good one in his situation, or just even have a permanent mooring ball installed.

He did mention a center post with the neighbor. He might not have room to med-moor.

Perhaps he can have another piling sunk on the other side and med moor (without the anchor) and use the two pilings for springing fore and aft. Tie off the stern cross-tied to the floating dock. They do that at A+B marina in Key West.....just google it for pictures to see what I'm talking about. That is if the waterway is wide enough.

That could enable him to dock his boat far enough from shore that he avoids the skinny water. My initial interpretation was that the pilings would be side by side by side 50' from shore (which is usually how I see it done on lakes) but if they are 25' and 50' then springing fore and aft off of them would be simple. The advantage to a lake is two fold. While the water may drop a bit due to weather it never really rises, so it's easier to position permanent fenders on the pylons and secondly the fouling organisms are much softer. Sure zebra mussels will scratch gelcoat, but nothing like big thick barnacles that are basically stone shards.