After years of discussion, the town of Longboat Key now has a way to pay for canal dredging.The Longboat Key Town Commission unanimously approved a resolution June 22 that establishes a funding method that essentially breaks up the cost of dredging into an 80/20 split between canal-facing homeowners and all other property owners.That means resident property tax bills will have another line when mailed this November. A flat 0.0623 property tax mi…