Are you using pre formed bodies? They usually come in size 10 or 12's and that is also the size hook you should be using. Mustad 94840 If you use craft foam the body should be hook length I use 2 pieces of leg material 2 in long when tying(four legs on the body each 1 inch when finished). Wrap a thread base add the foam with a couple more wraps. Add legs with 2 or three wraps straight out both sides of the hook and go fishing. You can add a little head cement to the under side and if you feel the legs are long trim them. My formed bodies or craft store foam float like a cork.

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Bill