They frown at you tipping them in the tank while airborne though
Yup, I'll have to make sure the autopilot is engaged for that one, and that I trim the aeroplane before I get out to sustain my weight and drag on the wing
In earnest, though, the only practical way for some of the LSA on a recent tour around the country to make the longer legs across the top end, was to have extra fuel on board for a quick stop at one of the many en route strips that had no facilities..