I attached a pic of what I'm using. I run 3 10" thick x 30" long fenders horizontally/angled (never vertical) to keep me away from every dock post & chunks of metal...90" of overly fat fenders keeping the boat pristine.
The OP said "track mount" so, maybe this is an option for some?
I've used these for years & they work well (just be careful of gunnel scratches): https://www.amazon.com/Davis-Instrum...21561567&psc=1
Using these with the boat cleats kinda sucks though
+ track mounted cleats for them: https://traxstech.com/adjustable-position-boat-cleat/
The Attwood cleats I'm using have holes that don't quite line up with Traxstech bases though:
All around most useless candidate?? THESE SUCK!! Fender lines don't hold https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1