Six of one, half dozen another IMO. We've had decent turn out -- around 30 per session, but most are involved with club and we stress that club takes precedent this time of year. Not much training going on, just 7v7 or 11v11 for an hour or so.
The biggest positive I have found is that you can get a lot of the preseason paperwork - SCHSL physicals, athletic policies, etc. collected!