KISS is the way to go. If you linemen are lost so is your play. I like the rule OIL. On (linemen), inside and LB. I had another website but it showed up as spam so google linemen blocking rules and the first site ie really useful.
Yep, seen that, and applied it some. GOOD, GOD, FBI, Gap-Down-Backer, etc. Whatever you use, you have to give them rules, and they have to be able to come to the LOS, remember them and apply them. The biggest thing at the level I coach is when the bullets start flying, they completely get befuddled, and they stand up like gophers and look around. I try to coach my kids that it's better to block the wrong guy full speed, than to block nobody at all. I'm told from coaches at all levels that this is a persistent problem when it's for real in a game.