There is a LOT more to the job of ag flying than just the flying part. it is an agricultural job and we do pretty much what a farmer does all winter. a whole heck of a lot of equipment maintenance, continuing education credits to keep the state pesticide license, sales calls with the farmers to keep the business going, paperwork, lots of paperwork, writing proposals for big state or county government contracts, all the stuff that goes along with a business. Family vacations also happen in the winter because spring and summer are way too busy. For actual income I try to do a little flight instruction in the winter, and sometimes a little computer consulting work (my previous career)