Hi Deanna, I make loofah soaps and they are quite easy and fun! I don't prep the loofahs at all, I just set them in my mold and pour the soap over them. Sometimes they want to "float" for a second until they absorb the soap, but I just push them back down and they do fine. You can either use individual loofah slices and embed them in a mold (this is what I do) or you can get a big piece of loofah and use a tube mold, then slice the log into bars. Easy peasy!