The sticky feet supplemented with adhesive caulk are the way to go without drilling into the fiberglass roof. The mounts are permanent and not going without the roof. They were tested on our summer trip with hours of 75 mph driving with wind gusts to 45 mph on a few occasions, travelled thru 100+ degree temps in the 4 corners. Panels and mounts checked on return, solid, no change. No concerns. I would consider sanding the dimples a little as Hophead did in his string. The sticky feet mounts are 2 part with bolt on the outside if you need to lift the panel for maint.
I did wire 6ga from a roof top combiner box down the fridge vent. That was the best route in the 24r to my charge controller next to the steps. All wiring has 12 volt breakers and the roof top solar has a separate switch , see the "solar again string"
I have 400 watts but the eclipse panels power profile is very efficient with my pwm charger (no benefit from mppt). We are admitted power hogs but I think we could hit 100 amp hrs charge with only 3 of those panels. Other panels may not be as efficient. Currently we are limited dry camping (no AC) only by water supply and waste tanks. If you don't charge 3 iPads 3 iPhones, and run cell booster with the lights , fans and tv then 200 watts will work fine, 300 if not sure. I was concerned initially about the heavier panels but they have not been a problem, lighter than a third battery, and held up well during our run in with the hail storm in Colorado. Incidentally all of the skylights did well, no cracks. Only "bullet holes " were in the hengs vents. I am replacing those with the fantastic vents with the polycarbonate covers. I do recommend the samlex 30 amp controller, it gives a nice flush mount without hitting the kitchen drawer next to the steps.
2015 Solera 24r