Thunder jet boats prides itself with a complete line of inboard jet fishing boats. designed to handle shallow water fishing or boating, our performance jet boats are. Boat plans for power, sail and small boats. free boat plans. boat kits and supplies plus the best boat building technical support.. Sjx jet boats inc. is located in orofino, idaho. right in the heart and soul of shallow water proving grounds, as well as the steelhead fishing capital of the world..