I'll jump in. Lefthook was not really shown any interest until after the summer of his JR yr. He was only sitting 82/83 and we weren't really hitting the recruiting trail hard. BUt, during his JR he had a great outing against a local rival with a top 10 round pick and several college commits on their squad. LH kept them all in check, thanks to the good 'ole CB and smart pitching, noticed by a couple of MLB scouts there to see the other teams guys, and it eventually led to a drastic move of summer teams. Then the summer went well, still not outstanding in the velocity category, but great off-speed and the ability to basically squash the running game with a man on first. Great SR yr and an outstanding performance against the same local rival, with scouts there to see the others teams top 10 rd pitcher, LHG throws a shut-out.
While his velocity never got him recruited, his off speed, knowledge of the game, and pitching defense with a great pick-off move eventually got him where he is today. Oh, and the fact that he fits the definition of a "Crafty Lefty" to a tee doesn't hurt! So, I think the pattern he fit is, if they are a LHP with good off speed, your velocity does not need to meet that magic 88+ number