I have a 16' flats boat with a 1997 two stroke Yamaha C90 that I would like to replace. Any recommendations for replacement.

This has been a good motor, but it's noisy and smokey. With the price of boats I was thinking of just repowering it. The old two strokes were light at like 260#. Don't want a bunch of extra weight. My buddy replaced his with a yami 70 4stroke and said it's fine. Would appreciate any input. Florida marine and fresh water use. Thanks