Now have my solar installation complete. I've put a 50W flexible panel on the port side of the bimini (sunny side on my berth), with a Victron 75/10 bluetooth MPPT controller, and I added a fuse between the controller and the battery on the positive and a switch between the controller and the battery on the neutral. The switch is for rare times where I want to disconnect the solar cells for a period but don't want any drain on the battery from the controller.
I couldn't get the wires down the boom crutch tube as the base was thoroughly sealed where the wiring from the stern light penetrates the hull, so put both the vhf antenna and the pv wiring through a new gland fitted to the inspection port. I would have liked it internal I guess but just couldn't manage it.
I forgot to get a screen shot of the controller app on my phone, with the settings and output but I'll do that next visit.