My back gets to hurting if I don't have a back rest. We try to get to the track 1 hr to 1 1/2 hrs before start time so that we can get a top row seat . Unless the track we know has back rests on all the seats. We know that we run a chance of not getting a top row seat but there's only 2 of us so usually we can find room.
Another thing that should b outlawed is those dam "stadium" chairs that basically wipe out the seat behind them. Dammit I'm starting to sound old n crabby! Probably this this thing about "stand up paddle board yoga " on CNN now . Ugggggggg