Like Shin Pond Hunter, ours seem to drain on their own, and I've never had to empty them. They seem to remain taut every time I've checked them after a rain. Ours is a 2004 model, and if the roller springs were going to weaken and let the toppers sag, they should have done so by now - but still no problem. BTW, ours are made by Carefree of Colorado. Are yours also Carefree, or is Jayco using another manufacturer these days ?
2003 Ford F-350 V-10 Crew Cab 4WD Long Bed
2004 Jayco Designer Medallion 29 RLTS 5th wheel
Bill, Gayle, and Mindi (dachshund)
Retired at last !
Nothing is foolproof to a sufficiently talented fool.