Join Paddle Perry for their 2023 guided river excursion series. Paddling Magnet – Derby. It will take approximately 4-5 hours to complete. Park at the Derby boat ramp, 12800 IN-66 Derby, IN 47525 to catch the shuttle to Magnet. The Derby Association has granted us access to camp on the riverfront of Derby at their park. If you choose to camp, use the 1 p.m. shuttle service.