What is a going rate on general contractor fees today?

[Jason Hutcheson]

I am under contract on a flip that is not in my area so I will be hiring a GC to manage the renovation on this project.  I am not familiar with the rates for GC services so wondering what advice any of you could give.  Is it standard to pay a fee or a % on profit of the project or both?  Have you incentivized a GC with bonuses to meeting or exceeding cost/schedules?  I have been serving as my own GC on all my projects up to this point so not sure how to approach it.  Any advice would be appreciated. Thanks!