I ride The old Phosphate mines at the Balm Boyette Scrub preserve and Alafia to name a few.

I rode a 27.5" full squish that had a 3 x 9 system,,I used about 6 of these gears. As soon as I wore out a chain I went to a 1 x 11 with a 32T up front and a 11-42 out back.

I still use about 6 gears