I did it with the 610 foam. For a Walleye jig, it was awesome. Now that I live in the South, I am not sure what I will use them for. LOL
I found that a quick mist of UMB mold release made the foam and aluminum mold release a little better; that would be my suggestion.
I see no reason why the Alumifoam would not work just as well, and yes, I needed to lock or clamp the mold shut due to the expansion and I tried not to over fill.
I would post some of the, but ...... have not found that box after the move.