Ok, I have an unorthadox one that I am itching to try - using suretogrow as a casing medium. I know that you can case with inert or non-nutritive substances but the mycelium only extends itself, it is better if there is a tiny bit of something for the organism to grow on. Now I know I will have to make the top of the substrate very even and flat so there is total contact with the sure to grow but I will have to soak it in something, I am thinking ph balanced coir tea. I believe that the result will be very even pin sets, no contamination, clean picking and superior water holding and handling properties. I have used water chrystals with a bit of coir and a bit of vermiculite and I got lots of nice flushes but the chrystals could not be recovered so it was prohibitively expensive - it did keep the trich down. I figure this method might also give me the extra water I need without the side effects of a too-wet casing layer made of organic ingredients. the only down side I can think of is as I said, total contact, maybe I will have to use weights, and of course the fact that sure to grow is white and so it will be harder to see the mycelium.