Before this gets into a high fence hunt "discussion," I'm guessing that's not a real option since you've both hunted for 25 years. You mentioned "trophy buck" but didn't explain exactly what you (or your dad) considers a "trophy." You also didn't mention what type of weapon you want to use--rifle, shotgun, black powder or bow. You specified a whitetail buck so that narrows it down somewhat. Do you have a limit on how much you want to spend?

I don't have a specific outfitter to recommend but I would suggest you consider an outfitter who can get you tags on a private ranch (not high fenced) and can put you on decent animals where your dad has good opportunities on making stalks and shot opportunities. No guarantees, that's why they call it hunting. In general, you might want to consider looking in Iowa, Wisconsin and some other states in that part of the country. Some of them have big whitetail bucks and low hunting pressure.

Hopefully some of the other guys can recommend a specific outfitter(s). Do your home work on whichever outfitter you decide to go with so you get the experience you want. Good luck and let us know how it turns out.