Sorry to hear the news. Not to understate the loss to folks who knew him personally, I never got the chance to thank him for front bearing preload or fan clutch and aluminum radiator advice or DIY alignment along with other invaluable tech advice I've probably forgotten.
I figure 4.4 amp rating for the panel. Aprox. 25 amp hours of fridge per day (24 hours)? if I get 3.4 amps (bad light/inefficient wiring) out of the panel it would take about 7 hours to charge the battery. Just barely large enough.
I don't usually park for more than a couple days (and I have dual batteries). That being said, a friend (solar installer) is "recycling" some used panels. Is a single 75w panel worth bothering with? It seems it would be right on the edge.
I forgot about that thread. Joses's armor is a much nicer looking version of the old "Action Jackson" 1/4 panels. I think I still stand buy the best solution, especially since it is the easiest and cheapest. Just "make it look mean".