I know that I've read the fit isn't great of the lap belt on smaller booster kids, but my dd is 7.5 and 70-ish lbs. We need another high back for dh's s-10 pick up that she rides to school in every morning. We've been using a lbb, but I'm getting paranoid and need a high back booster with foam. Thing is, the truck gets used a lot by my FIL and he has to take the booster out and put behind the seats when he takes the truck. (It has those little jump seats so there's room to put the booster back there out of the way, and no we don't use the jump seats for actual passengers) Anywho, I see that the Compass folds and I think that would be our only option for him being able to continue to put the seat back there. It would make it easier on everyone. So, should I have any concerns with a bigger kid getting a good belt fit in the Compass?