I have two slide outs on my 31 BHDS with slide awnings and use the cheap blowup beach balls between the slide awning and the top of the slide. Keeps the awning from pooling water in a rain storm. Just don't forget to take them out before retracting the slide. Works for me.....
Jayco 2012 36BHDS
On permanent site in Central PA
Denny, Melissa, Talia (granddaughter) & Tango (Golden)