I don't know if this was posted before or not but I've noticed that a few of my pairs of shorts have an inner "lining". Not great for the rower. The friction by the inner liner in the shorts creates nasty, nasty chaffing. I make sure that I never row now in those shorts. Since then, no problems.
Mike Pfirrman 52 Yrs old, 5' 10" (on a good day) / 185 lbs.
Haven't read every post in this thread, but has an anyone experienced one (or both) of their glutes rolling over while rowing? My left glute has started rolling over in the past few months and it gets pretty sore after 5 minutes or so. I've tried towels and they don't make much difference. It's never been a problem in almost 5 years of rowing.