Hardly advice that's useful everywhere. I mean, here's a ride I did recently on my gravel bike:



Multiple stretches of .5-1 mile averaging 11%+. Also lengthy spans of flat and shallow downhill. I can't imagine any single-speed configuration on which this ride wouldn't suck.

It would be pretty difficult to concoct a gravel ride in this area on which a single-speed wouldn't be massively annoying for large stretches, unless riding back and forth on unpaved MUPs is your jam.

I could imagine having fun with SSCX in SSCX races, but that's about it around here.