Today's mod, installing vent covers on all three roof vents. I didn't go with the fancy ones, because I'm usually in the heat and use A/C instead of vents. I did want to put these in for venting while traveling and when I have it covered I can leave the vents open. the cover is breathable fabric.
Mods to date; 40" smart TV in living room, 29" smart TV in garage, bike chock in garage, 4000w Onan generator, water accumulator, AGM (2nd) battery, changed compartment locks, and the vent covers. A 30w Progressive surge protector will be next. Jeez, I just got this thing in January!