Wasn't it Lee Pryor that was mass dropping?
Lee does indeed mass drop.
I have done mass drops in the past but then moved onto drip drops; steady, regular streams of leaflets going out week after week. When I was filling up they were perfect, as I'd end up with a manageable number of first cleans each week.
One memorable mass drop got me thirty (IIRC) new customers in one day and left me in something of a state of panic. The steady drip of calls was much more pleasant.
The good news about maintaining statistics on your drops is that if you want, say 20 customers, you have a good idea of how much to send out. You won't end up with 5 and desperate or 40 and wondering how you're going to manage.
And, back on the subject of franchising, the franchisee doesn't have to worry about any of this; I do. That's part of the expertise they are paying for.
Vin