I am new so please excuse if this is a repetitive Q. I would like to buy a tow behind leaf vac for my riding mower. Trouble is, my leaves are not on the lawn. Instead, they are on un-even dirt or gravel and I don't cherish the thought of first running debris through my blades. Basically, I would be content with towing the vacuum with my machine and remotely using a suction hose to vacuum the leaves up. Can someone point me towards a high capacity vac machine with only this dedicated feature? I have struck out so far. Thanks!