The Longboat Key Town Commission has taken the first step toward introducing a new tax and fees to pay for canal dredging, and some property owners are against the funding method.On Thursday, Dan Dexter delivered a letter to Longboat Key Town Hall to appeal the assessment on his and his neighbors’ properties.“For the record, I am formerly appealing any assessment related to the above subject,” Dexter wrote in the letter. “A mobile home on Longbo…