The boss would not let me trim the window treatment so we positioned the recliner loveseat away fro the wall so the seat backs would clear the window treatment when fully reclined. That meant the front legs of the loveseat were off the slide. We used 3/4" plywood sections that we screwed to the slide floor that were covered in a similar carpet that extended to be under the loveseat front legs. We didn't screw the loveseat frame to the plywood panels but used electrical conduit clamps and the seats belts around the frame to secure the loveseat but its weight was probably enough to hold it in place.
A note, I could have been a 1/2 inch farther away from the wall because the clearance needed when reclining was less than raising if I didn't raise the back separately before dropping the legs.
Dale & Mark Bruss
13 Years Full-Timing Now with a 2016 Bounder 33C
40' Travel Supreme winter residence
Lots of RV Information at www.dmbruss.com