I have that mold, and had bought a big box of hooks, that are not for that mold, but with a small modification I have made them work. I think that's going to be the case, is find a hook that will work, even if you have to modify the mold.
I had actually bought the hooks with the idea of using them to make fly rod poppers, as they had a offset bend in the shank. Thee are like some of the old Charlie Brewer slider jig hooks, but are black nickel & very sharp. I have no idea who made them, or who had them made. You know with Ebay, sometimes you find things that later work well for something else, especially with fish hooks.
BTW, the standup molds are like that too, as hooks are sometimes hard to get that fit. I've got a modified mold that takes a regular 90 degree Aberdeen jig hook, and don't know why that wasn't done in the first place. I never cared for having the hook eye right on the bottom, as that seemed to bang up the line knot too much. The 90 degree hooks are very popular and work a lot better.
I'll try & take some photo's of the Yamamoto jigs with the hooks I have.
