Do you own a kayak, canoe or just a bank angler but are having the hardest time finding fish? Well you should check out the Humminbird SmartCast RF25. The SmartCast is simply a fishfinder, depth finder and the RF25 is a rod mounted unit. about the size of a watch. These really work! us here at the Manteca BassProShops tested it in the aquarium, and this little fishfinder actully worked the Marine crew here at BPS was really impressed. So please do check out this little fishfinder. It will blow your top off.