Odds are good you'll need a carb rebuild. I think I would want to anyway. But you may be able to get through the season and do the rebuild in the fall.
If the boat starts that will be a good sign. If it runs rich, lean, or floods easy then you'll need a rebuild.
Did you take a look at the fuel screen at the carb?
Let us know how the first start goes. Maybe you have been living right and will get lucky.
2006 Bayliner BR205
A1 Gen 2 1.47
5.0 carb engine