Canvassed up rounds are just a list of names and addresses. You don't know the circumstances of how the list was compiled, how committed the people are, do they even remember saying yes?
I am very cynical, years ago Loot used to be full of adverts for rounds that were very dodgy just like the people selling them. Blitzers we used to call them, if the round is so flippin' good why weren't they working it
There used to be a bloke called Martin around here about twenty years ago. All he would ever do was build rounds up and sell them for a big whack. I don't think any of the people he sold the rounds to lasted a year. Most were just out and out victims, never going to hack it