OSOW

I have this posted in the OO forum too. Not sure if it's ok to post the same thread in multiple sections. If it's not I apologize. Anyway, I'm looking to pull some oversize but I don't want to butcher the rates. Since I'm new to this, I'm asking for help in determining rates for loads that are under 12' wide and less than 13'6" high. I want to avoid anything well over my head that involve pilots, surveys etc etc. Just looking to handle the "baby" stuff and the occasional overweight load. I can scale 48k but sometimes there's opportunity to handle a 50k load etc etc. Where's a good place to start on rate determination?