Lakeside marine is harrisburg pa’s dealer offering the g3 1860ccj boat designed for shallow water running of the susquehanna river in central pa. the g3 1860 ccj is. Purchase online, then download start building today! the dillon laker 14: boat plans: a recreational tunnel boat for motors 60 hp to 80 hp. The "dillon mini tunnel" gt pro racing tunnelboat. redesigned for 2014 see the new plans. also available: cockpit plans can be adapted to the mini tunnel.