how to get a landscaping crew full time

[raish05]

i have a lawn care landscaping business we mow a 150 yards a week with 2 trucks and 4 guys busy with landscape work in the first part of season. should i just get a couple part time guys to handle the landscape work until it slows down or just do what i can on weekend and turn down the rest of the work. it dies off after july 4 how can i get more to keep another truck busy 5 days a week and keep a crew for landscaping thank you