Having just got back from Germany, 1600 miles in all and yesterday about 550 in one hit, with (currently) a bad case of sciatica, can I suggest... drugs? My Dr has prescribed me Naproxen, it's like strong, slow release Ibuprofen, and despite my Tracer having a seat as hard as a park bench, NO pain.. (till the physio got hold of me this afternoon. Bent me like a pretzel, he did.)