I love this method for pre-sprouting:
Germinating some seeds - How I do it - Overgrow.com
Then, when the tail is 3/4" long or so, I gently move into a light seed starting mix in small cups. I literally water with a turkey baster around the outer edges (force the roots to look for water). Sometimes the 3/4" sprout is straight, and tail goes down, helmet up. If its sprouted in a U, I put them so the taproot and helmet face up. 10 days to two weeks and then I pot up to 1, 3 or 5g pot…
Works well for me 
and I used to presprout with the soak in water / paper towel method with good success, but @JohnnyPotseed s method even taught this old dawg some new tricks