Brocraft Fish Finder Mount Hobie H-Rail/Compatible with Hobie H-Rail Marine Universal Electronic Mount /Hobie H-Rail Accessories . Use mount to attach fishfinders and other marine accessories to Hobie H-Rail .Multi pattern universal top plate . Quick removal and infinitely adjustable rotation .Fasten your sounder bracket to the top plate then lock down the sounder mount into mounting system .Designed for Hobie H-Rail