Shimano’s proven TDR trolling series continues as a mainstay for those anglers looking for a rod to match with their Downriggers, Planerboards, Dipsy Divers or other trolling applications. With actions designed over the years from our rod specialists and professional staff. Offering you the right tool for any trolling situation or application. The Downrigger/Planerboard models were designed for a multitude of trolling applications from pulling cranks to bottom bouncers.