Should I get a MPPT controller, or B2B or CTEK or......... help?

[hairydog]

You could just pull the fuse to the panel each time.

I can't see any reason to put a fuse in a solar panel cable.
Fuses protect cables. The cable should be fat enough to avoid voltage drop at working currents, so will be fine with a dead short even if the panels were in full sun.