I think lifting during the season is actually a good idea, but the emphasis, goals, and approach to it is definitely different than during the off season. For example, the off season is the time to lift to get strong and gain power and possibly size if that is one of the objective. A well planned lifting schedule of 3 times a week or so, maybe more depending if it is split routines or total body workout routines. During the season though is more to maintain what you have built during the off season. I would not recommend lifting more than 2 times a week during the season. In fact, 2 times should be plenty during the season, and some weeks depending on competition schedule once or maybe none during a particular week may be in order.
In my opinion, I think it is a good idea to not do any lifting at all when an athlete is within 10-14 days of the competition that they want to peak for whether it is the state championships, nationals, and in some cases the regional tournament in high school which is the week before states.
