I did it a few years ago. The Erie
Canal from the Finger Lakes up to Lake Champlain.
The thing to consider is that with the mast on
deck, you now essentially have a 47'
boat rather than a 32' boat. The locks are fairly benign, your biggest issue will be the mast with it's overhang and other
boats. Not sure going solo is all that prudent to be honest unless you have the locks to yourself. I know that if I was locking along with someone who was doing it solo, I would probably consider hanging back so as to not be in the same lock at the same time. Not personal, just you will be shorthanded and the margin for things going sideways is much higher.
Having said that, if doing it solo, I would consider initially coming alongside with just a stern line to hold the boat securely against the wall with the
engine in forward idle while setting up a system like you have in the diagram. At least then the boat and mast wont go anywhere while you set up. Then put the boat in neutral for the
lift or descent. The lock masters are very helpful and patient.
Cheap plastic buckets
work well to protect the masthead and mast base. They can be manipulated to fit over the ends and stuffed with old rags or sponges. Building a proper mast
cradle will payback in spades vs just lashing to the pushpit and pullpit. You will be solo and may need to move quickly on the
deck. The last thing you need is to be stepping over a rig. Check the waterway website regularly because sometimes there are lock closures or changes to schedules due to staffing issues. If you ask the lock master, they will likely notify the lock ahead of your ETA and the fact that you are shorthanded. Some will likely appreciate the notice that you are shorthanded. By the third lock, you will probably have settled into a routine that works best for you.
Bring some good
work gloves. The walls can be dirty and slimey. Handheld
VHF or a temporary antennae for the ships
radio so you can communicate with the locks.
Most importantly, bring a good playlist for the stereo and make sure it includes Bruce Springsteen's "Erie Canal". It really is a fun trip. Enjoy!