Seems like I may have struck a nerve in places...not my intention.
Obviously, the best way to get more flying in is what I suggested. Whomever does the marketing, more work means more flying. Diversified work means fewer slow times. If it isn't possible in that market then some operators find it cost effective to move the machines to where the work is found.
I find skills deteriorate quickly when out of the cockpit, but an effective requalification can bring them back again. If I were a bean counter, I would go for bare minimum flying during a zero money season, and then spend the bucks to get up to speed just in time. Of course this requires having a quality training team and system.
However, if I were a bean counter, I would realize that those slow periods cost me money instead of making me money. Would fix that.
The other economic consideration for the company is if the pilots don't like the offseason with that company then how long will they stay...and what is the cost of training new pilots?
Maybe you should look at army reserve.