Watching this thread as well. Planting 100 seeds of the forbidden fruit, cosmic crisp.
The more successful guys plant the seeds in a pot on the porch with a layer of sand ontop. Maybe 1/4 inch or so. LEt nature take her time and dont give it too hard or a sun this summer.
Buying a few rootstocks, then tip them on their side in a layer or mulch or loose soil. As roots emerge from the main trunk, you got new rootstocks. Seen a video where a guy gets about a dozen a year from each one.
Growing mine to find a nice crabapple from the enterprise / honeycrisp parents. Drop time and disease resistance should be good parent genes.