you guys are killing me when i here what you are spending to winterize your engines, 1 can of fogging oil $5.00 DIY very easy to do, antifreeze in engine $10.00 DIY easier than fogging engine, changing lower case oil hose and pump $10.00 to $15.00 use over and over Bass Pro, oil for lower unit 2qts $16.00 DIY easier than antifreeze, changing engine oil filter and oil $20.00 Bass Pro DIY,all this can be done in less than an hour.
get a two or three gallon trash can clear if possible $5.00 or less, go to the hardware store and purchase a valve (ball valve, faucet, something with a quick shut off make it cheap) drill a hole the size of the end of valve as close to the bottom of trash container (flat sides not a five gallon round bucket)get a nut and flat washer to fit the other end and a tube of silicon for sealent make sure your valve will accomadate a garden hose, short garden hose six foot to eight foot, (fittings on both ends)pair of muffs for engine, once you have this together (let cure 24 hours)put muffs on engine,(over intake grates lower unit) hose from muffs to bucket, fill bucket with antifreeze start engine, when engine pee's antifreeze you are finished shut off engine,DONE - lower unit, pull top and bottom screws on side of lower unit (bottom first top last)let drain, screw hose end of pump to lower screw opening on lower end screw pump on qt bottle pump until fluid comes out top hole (might take two qts)put top screw in FIRST unscrew hose from lower hole replace screw DONE - change oil (engine) remove plug drain oil, remove filter, replace filter, (smear oil on o-ring before installing)put plug back in fill with engine oil (not 2 stroke)no oil change for a two stroke,DONE - pull plugs (all) bump engine (you will need two people)with key, do not turn it over like you are trying to start it, spray each cylinder 3 to 5 second burst in each cylinder do all cylinders, replace plugs Done - you just saved $200 and you have the materials to do it again next year.
If you have an inboard you can run antifreeze same way,(pull drain plugs first then replace drain plugs then run antifreeze) lower unit oil is the same, try to get the antifreeze container higher than the muffs, set on ladder swim platform etc.I have had 6 boats in the last 20 years I have never had a problem, both inboard and outboard and I'm In Kansas, we see plenty of cold weather, I hope this helps, if you have $200 or more to spend go for it, I like the DIY