Elliot, sounds like a sign that your metabolism is too good and you are doing way too many activities to get any bigger. Hence why the biggest guys may not be in the best metabolic conditioning...and smaller guys with great metabolic conditioning will not get any bigger. Simple energy in vs expediture.
Hockey is still a huge cal burn (2000+).
Right now I can not eat that much food....so I opted for only 3 days working out and no other planned activities (maybe some biking on the weekend). My conditioning has gone to crap...but then again that's easy to get back in my book. It's putting on the lbs that is a pain in the ass.