This is a good question. I was at a football coaches clinic earlier this year, and one of the state's most successful coaches (maybe the most successful) said that when hiring assistants that he'd far rather find someone with great character and shared vision than great knowledge of the game, the idea that he could teach them the game. He also liked good teachers. I'm not sure how a travel coach screens for that, but in high school football, most of the assistants also are school teachers, and you can tell by that how they might do on a football field. But I do tend to agree that a prospective assistant's experience and knowledge, while valuable, are probably not as important as his/her vision and goals for the team. Need to be on same page. Marriage is that way too. Common vision and worldview are underrated.