A choke that does not fully open. When engine is fully warmed up.. Do check ALL the sparkplugs for black gook. Also if they are the correct part number. and correct gap.
Perfect That stern heavy condition will improve with you using a bow mounted troller.
I would use that picture to show bow mounted troller companies the amount of hull you need to control in winds.
There are trolling motors that can easily handle your boat from the bow. Is there a bow deck area...
Guy
You need a very cheap, simple, Bow or stern mounted TROLLING MOTOR to go into the mucky stuff. Bow mounted trolling motors are WAY WAY more in control of the boat direction and speed in breezes.
What size and type of hull is the boat ?