There's lots of ways that you can rig a Horny Toad.
The first is a 5/0 Gammy EWG, the second is a Zoom screw lock hook made for the Horny Toad, the third is a Matzuo 5/0 extra long shank, and the last is an Eagle Claw with a weed guard.
My most-used is the first and second because they are most weed resistant.
The one with the easiest hookup is the third. The hook point goes up around the end of the body and between the legs and the point is placed in the skin on the back. It gets knocked loose sometimes, but hookups are really easy.
The last, with the Eagle Claw, was experimental but it actually works pretty well.