Thanks BFL, that is a repackaged Tracer I'm pretty sure. Probably do series-parallel combo. Pretty sure the coach is prewired with 10AWG from the roof which would handle parallel OK, but less voltage drop if I do series-parallel, or it looks like the controller can handle 100v so series is possible. Figured I need to study the efficiency graphs for the panels and controller to make a decision on that.
But I'm not really looking for ultimate performance so much as reasonable performance at a reasonable price. And we'll usually hit a commercial CG every week or two, so there's an opportunity to top charge then also.