more of a headache to me because should they wanna stop your services mid season guys who made the contract wanna fight about trying to make the clients honor the contract and sometimes lawyers get involved.
mine is a simple no fuss operation. you wanna stop service call, email or send me a letter. the I will stop service and get you a final invoice and your free to go.
I wouldn't call myself a mow n go, but I'm sure I'm completely full service either. while a good chunk of my business is mow n go, I do have full service clients.
I've done both residential and commercial and have never done a single service agreement or contract. just a phone call or in person "when can you start".