Below are just a few suggestions for keeping your round bale dry with rain forecast.
Simply place a tarp between the net and the hay
External tarp on a round bale also works
Hay Huts work great with GutzBusta® Slow Feed Hay Nets for both weather protection and keeping hooves away from nets.
GutzBusta Round Bale in Shelter with gates as barrier for shod horses
One client showed us their hay net in an Advantage Feeder. This not only keeps feet away from the bale and netting, but also protects the bale against rain.