I'm hearing but learning ASL. I've studied a lot of languages and use a very writing-based method, like most language learners. I've also been reading about techniques used by prolific polyglots, and recently dove into the "Anki Flashcard" system, as proposed on
fluent-forever.com . I especially like this system because it sets up the potential for a continuum between infant learning via LR/LM/LM, and adult learning. I hope that as an adult, I could learn language to the fluency of a child, and I similarly hope that children can move smoothly into learning like adults. (Adults who have fun learning, that is!)
So for the uber-serious off-the-deep-end ASL-teaching parents, who might want to teach their kids to
read ASL, I would recommend signwriting childrens' stories.
http://www.signwriting.org/library/children/-Steven