My original power of 1991 Yamaha 90 2 stroke has been a very reliable motor and is still running strong. But it is time to prepare to replace with a 4 stroke Yamaha 90. Looking forward to a quiet motor without the 2 stroke smoke. I don't need to replace today but I am prepared to purchase anytime from now till next April. When are the best deals? Possibly some Covid sales?, End of the season in the fall? Boat show in the spring? Thanks!