I rode fixed on my first tandem in the early 70s. A heavy post war job with vastly heavy Chater Lea chainsets, 26 1 3/8 steel wheels on double fixed tandem Airlite tandem hubs. Stopped by a pair of Weinemann 999 centrepulls. We rode 76" for club rides (and occassional commuting) and 95" for timetrialling. So you don't have to be "hard", I did it because that was the kit I had and I was a pauper