Dead Head Limits

Hey Guys, hope everyone is doing great today. Got a question, recently I've seen quite a few articles and videos concerning negotiations for Dead Heading. Now we all know it is more of a factor with freight than with autos however not entirely out of the question. I went through all my current carrier contracts and found only one of the "power brokers" has an option for requesting dead head pay. However it isn't much in the way of payment. I called my agent and was told under certain circumstances such as delivery times or rush loads the carrier can request specific dead head miles to be paid.
All of us have the option to refuse any load unless were under a forced dispatch contract, but I don't know any expediters or hot shot O/O that are forced dispatch. We also know a lot of "power brokers" and for that matter the majority of brokers are not out for our best interest, it's about the bottom line and how much they can get the load moved for at the absolute cheapest rate possible. Granted there are a few that are genuine and will work with you but personally I have met only one that will offer a slightly higher rate because I have moved units in the past for under the basic minimum rate as a favor. This was in the beginning stages of my company and I was trying to establish a reputation with them. I didn't lose money but there wasn't much of a profit.
So my question to y'all is two part. One how do you determine what you need to be paid for dead head besides the basic costs incurred daily? Second what is your absolute maximum dead head miles your willing to go either paid or not paid? Not paid sounds a bit crazy but in some cases your terminal or yard location (starting point) may not be in a high traffic area and may require a minimum amount of miles in any direction.
I believe this would apply even if you didn't return home and ran continuous up until your 34 hour reset. Personally since I don't have a sleeper I prefer to do my reset at home not in my truck or a hotel, unless the next load is a high paying, one that is quite a distance.
So what would y'all consider to be a fair rate or dead head miles to get from the broker, and again what is the max amount of miles dead are you willing to go for that broker?

Thanks Guys I look forward to the comments.
Stay Safe out there it's a mess here in the south.
Ryan