the last two times iv done it in a paper towel in the hot water cupboard but it seems like unnecessary risk transplanting them. wouldn't it be easier to put it straight in soil or rockwool?
I agree. I did paper towel once and didn't like the risk to the exposed roots. Since then I soak in 5 parts RO 1 part 3% hydrogen peroxide until the seed cracks, maybe 1-2mm of root exposed. Then plant in soil.
I just tried Rapid Rooters for the first time. I'm sold. Worked much better. They sprouted sooner. (I did my soak for 12-18 hours.). I turned the rooter upside down, poked my own hole in it (stabbed a few holes branching off from that hole, using a paper clip), tore off a piece from the side, shredded it and sprinkled over the seed to make light top-cover.
I think the hole it comes with is too large, for cloning. People plug it with a piece of material tore from the side. But, I still think it doesn't make good contact in that hole. I saw a youtube video where someone creates their own hole on the opposite end. Seemed like a good idea.