speed

I’ve got a 2006 Catalina 36 MKII which has a folding prop, on the smaller side. I get about 5.5knots under motor which isn’t cutting it for me. Can anyone recommend the ideal prop size and model for my boat? I would love to be averaging 8 knots under motor. Thanks in advance.

I recently bought a 1984 Catalina 30 with a Raymarine ST60 Tridata (although might be an ST60+; it has a power button) installed. The unit worked fine during the trial sail and "never" gave the previous owner any problems, but I haven't been able to power it on since I bought the boat. The cable...