I have a Master Blaster on order. One of my vehicles is a Tahoe that is a little over 6' tall. I use a 3 step step stool to wash the roof. I'm thinking the 10' hose slung over my shoulder while standing on the stool will be a little short and cumbersome to use. I'm thinking about ordering the 10' extension hose (MVC-56D) from Metro Vac (AG doesn't carry it). Has anybody used one and does it slow down the air flow due to the additional resistance from a longer hose?