What do you mean by... 'Paying Cash' ??
Don't you have this guy on the books ??
Does he or doesn't he work for you ??
Are you really looking for an installer to dig holes or put signs together ??
If I were you, I wouldn't be advertising for people to work for cold cash or you could get in a lot of trouble.
Besides, if you hire a complete novice, how good can that be, unless he's only gonna dig holes ??
I would expect, you either need an employee or a sub contractor..... not someone you don't have to pay taxes, FICA and other fees. Paying people under the table is really not legal...... in case you didn't know it. When he shows up to dig holes or instal a sign on a property, how do you handle permitting..... if you do at all ??