As we all know winterizing the AC can be a B. I usually do it in the water so I can activate the AC pump as on shore I have no access power.

AC pumps are not self priming and therefor you can blow or run fluid past the gears/vanes without any pressure. I just bought one of these https://www.amazon.ca/dp/B07DM3SJPT/ref=dp_cerb_1 Which I will insert into a 2 1/2g wide mouth pink stuff container. The other end gets connected to my strainer cap adapter. It comes with long leads and a switch on the leads to turn on and off which is handy. I will use a small RC style battery to run it to avoid connecting it to the boat battery. Since I have 3 AC units I will plug 2 outlets with corks and run the pink stuff switching corks to ensure all three get done. Rather simple and effective.