Throughout the season - I think parents should check their kids weight Monday morning when they wake up, Monday evening before and after practice. This will help make some decisions by not waiting until the last minute before signups. Some kids will and should lean up as the season goes along and some will and should grow from December to March. Watching your weight is part of the sport - but it should not be all consuming every week. Learn the skills, work at getting stronger, eat right, and condition.