just pay them dude. i mean how long does it take to drive back? 5-15min at most? that's not much more money to pay someone.
when i worked back in college i might as well been an illegal alien because the boss always paid us in cash and none of us paid taxes on it. it was a very normal thing to do back in those days. no kid that ever cut grass back then paid taxes ever. it's not like we were making a killing or anything. maybe 8-10k a year lol.