By your screen name it appears you are working your route solo. Is that correct?
How many customers, days of the week you work your route, and how many hours a week does it take to do your landscape route?
Are you married? Kids?
As grandview said give up the plowing or a second option is to find someone to sub out your plow route to cover the route for 16 hours a day and you still plow your accounts for the other 8 hours.
You now have your plow route kept in your business name and it will be there as a back up in case your beer case moving job goes south on you.