Has anyone put a fin fun in a mertailor guppy, which fits the Linden fin? I figure if a Linden fin can be put in an FF tail...I could stick a fin fun in the guppy. Now it may not look right or fill the fluke, but my purpose is to be a twin to my friend. I don't need to buy another monofin so buying the Linden is not going to be an option.