So after further thought & deliberation, I'm leaning toward storing it sans cover, with a solar battery tender, & a windshield sun shade. Does anyone know or have experience with how much power (watts) I should be looking for in a solar charger?
The standard (non-waterproof, plug-in) Battery Tender Plus+ is 15 watts (1.25-amp, 12-volt). Battery Tender makes solar panels in 5-, 10-, & 15-watt; I'd like to get the min power that'll suffice & save some $$.