Waypoint Techmologies HPWIC01 Lakemaster Humminbird Wisconsin Marine Digital Chart Lakemaster Promap Digital Lake Charts. An embarrassment of fish – finding riches for your Humminbird GPS unit! NEW for 2010! Lakemaster’s renowned HI-DEF detail and map accuracy combine with Humminbird’s side-scan sonar capability to deliver the angling advantage like never before! Simple plug-n-play operation… plug it in to your Humminbird 700, 800, 900 or 1100-series GPS Fishfinder, and you’ve got a feature-packed wealth of info at […]