swingline,
In order to learn about how best to arrange for distance/time bonuses, you may want to start by experimenting with building one day routes that return you to your home base each night. This is a relatively low risk, low cost way of refining your route building and bonus negotiating skills while establishing a rep for reliability with some schedulers who may start out as skeptical about assigning somewhat distant shops to you.
In other words, this whole area of MSing has a lot of "moving parts," to consider. About 8 years ago I attended an ling discussion by experienced route shoppers (both long and short routes) at an IMSC conference. I put what I learned to work on short routes over the next year and increased my net by about 50 %. That was even before I started doing overnight video shop routes, which then increased my net by a lot more. A recent IMSC Global Teleconference (2 full days of training, available on recordings, and with online questions from the original world-wide audience) contains a long session on route planning and negotiation by a shopper who is an acknowledged expert at this art. I think that you can still sign up to purchase 30 days of access to the two full dys of teleconference. I am not sure, but seem to recall that it was something like $25. (I was recovering from an injury and an illness and did not attend. I had to cancel my workshop, so I am uncertain about the details.)
For more information look for IMSC on Facebook or do a search for their new website.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.