Ok, I'm in. I can't stand Lesh's bass style, because it so goes against my philosophy of the bass. Having said that, he was perfect for the Dead. I imagine that once you get into the groove of his style, it's not too hard to stay in it. Getting there would be hard work for me, though. Develop your ear; I mean, really develop it. Start with hearing a phrase of a melody, then play it on the bass, or better yet play something damn near it on the bass. Practice doing this until you can do it in real time. Much like bluegrass vocals as one of the posters here said. It's ALL counter melody. IMO
Bill
Bill