Mercury, 115 hp (85 kw). Buyer's premium included in price usd $95 custom built air boat, airplane engine (runs) part of a complete liquidation sale of a long time excavation company in the. Offering the best selection of boats to choose from. 1,289 tracker boat products are offered for sale by suppliers on alibaba.com, of which navigation & gps accounts for 11%, gps tracker accounts for 2%, and rowing boats accounts for 1%.