I put a froli system in our v berth this past spring and it is absolutely great. It is under our foam matress and not only gives air circulation but makes the bed feel better than many of those high end mattresses you can buy. An installation video would have been nice but it wasnt too hard to figure out without one. It took about an hour and a half from opening the box to putting the sheets back on.
sck5 ... thanks for the input ... I am seriously considering purchasing this unit.