Thinking out loud:
If it has a bag attachment then you can also rig a filter on it to block any debris from being rocketed at your finish.
Lucky Joe,
Wannabe Detailer
Sent from my HTC DNA
I have a simple solution for this. I simply steal a pair of panty hose from the wife, cut off the foot section, and slip it over the air intake of the blower. Keeps debris out while not restricting the air flow.