Looks like plenty of room to access and install bed rails and no you would never use trail rails for any of the tonneu cover installs. They are only used for tie down ratchet strap or molle system rails for mounting or tie down needs.
If you are asking do you need a factory bed rail type system NO
It does not use or require tie down bed rails but uses its own rail system that over laps on partially on top of the plastic and then bolt points on the inside of the bed.
WorkSport AL4
After watching numerous youtube videos and review of other posts i decided on the WorkSport AL4 Flip-Up Hard Cover Tonneau on my 25 Mohave X.
The install was pretty easy. I did have to initially thread bolts from the rear side to clear factory paint that was in the threads at...