Back in the '80's, when we regularly played UF, I used to look at their rosters and was amazed at how few South Florida players were on the UF roster. Usually fewer than ten. (I really only looked at Broward and Dade). UF recruited the rest of the state and often Georgia and other southern states.
I think FSU used to recruit South Florida more intensively.
One year, I remember a story of Spurrier complaining to the MNW coaches that they didn't send their players to UF. I guess he felt the kids were steered to UM.