I have a dealer installed roll-up and have never had any leakage issues. Very convenient to use. Normally kept closed. We open when we go camping as we carry 2 kayaks angled in the truck bed.
Our old Ford F150 came with a solid cover that we didn't care for. Extremely heavy to remove not at all convenient for when we needed to carry large objects.
2015 Shamrock 231KSS, Oyster shell
2016 Chev Silverado LT Z71 Ext. Cab, 4x4, 5.3L V/8
Reese Straight Line WDH, 2000W Honda Gen.
2 Old Town kayaks & 2 Boston Terriers - Zoey/Gonzo
Lar & Ruth
55 nights camping in 2015, 45 in 2016