It's nice to say, I want a full days pay for a job that takes 6 hours, but in the real world you will loose job after job bidding too high.
I might tell the customer that it would be nice to have a full day of work and try to sell 2 or 3 more hours of work. Otherwise try to schedule a small job. It's nice to keep these small jobs under your hat, for short days.
Say someone has a brush pile, tell them you can do it sometime in the next three or four weeks, rather than say it will cost $600, or that you don't do brush piles. Then it's there waiting for the next short day.
We line up as many of these small jobs as we can, if we get too many, we do a whole day of short jobs. These are some of the most profitable days.