I use a 30 degree jig hook and screw lock. 5.0 for the 4", 4.0 for the 3.5" -> this lets you run it between the legs and skin hook on the back. For me, my hook-ups are higher this way. If you want to T-rig it you can downsize both 1 size. You can buy hooks in bulk from Barlows or Hagens.
As a side note, I am going to start carrying hooks specific to our baits as soon as I get done testing them. I've talked to all the major Mfg. and have it narrowed down to 2. I have samples and am checking them out. Will keep you posted.
Tight lines!
Jason