I'm very happy with my Leer HF650M. I've used it partially open, fully open, and, of course, mostly closed. I've removed it a couple of times (easy removal, but lift w legs, not back!) to fit my ATV in the 5.5' bed. The only water I've gotten in the bed with it closed has been down the inside...
I picked up my Lariat Max Tow this week. Got the sensor, but no stickers. I have two trailers, so I'll try the non-permanent sensor install. (Love the truck!!!)
Spreadsheet link (you can download and customize):
https://drive.google.com/file/d/1gSozUH7LuwsObkaZnY2ek0j-93N4OWtc/view?usp=sharing.
From this YouTube video.