FREE SHIPPING ON ORDERS OVER $200! RHODAN Trolling Motors GPS Anchor Incorporates a micro-computer module that utilizes a GPS receiver to monitor and control the trolling motor. RHODAN HD GPS ANCHOR Trolling Motors – 12V $2,204.99 RHODAN HD GPS ANCHOR Trolling Motors – 24V $2,326.26 – $2,725.05 RHODAN HD GPS ANCHOR Trolling Motors – 36V $2,725.05 – $3,986.83