Hawaii isn't very good because unless they are specifically on the island your school is on, its still 300-500 miles to recruit others from the same "state". Arizona State for another Big 6 school is pretty bad. There's not a lot of recruits, and you are behind AZ who's right next to you. You go west, and you run into Stanford and UCLA for the top guys, and battle conference mates for the rest. Going east, you have to go quite a ways out to find a recruit anyway, and by then you are running into Big 12 schools who usually have prestige and/or distance.
Althought I've never been there, I'd think Purdue was pretty bad too. North is Michigan State, west is Illinois, south is Kentucky, east is somewhat open, except you are at the same distance as Big East/ACC schools who usually have better prestige, like West Virginia, Pitt, Syracuse, etc. And 70 miles out, you still have Indiana right there. Along with Notre Dame, Northwestern as well. Since its not like the east coast where there's a lot of recruits in a small area, it gets dicey to have enough recruits to support more than 2 top programs. The Big 10 recruiting area in general is pretty bad.