Can the jets handle sand and gravel?
Yes, the occasional gulp of sand or gravel is not detrimental to the jet drive. In fact, waterjets are much less susceptible to damage than an underwater propeller in similar conditions. Continuous operation in sandy or silted water will accelerate wear of the impeller. Remember to keep the power low when crossing sandy shoals so that there is reduced tendency to draw sand or gravel into the jet. 12. What if the boat runs aground? Some jet boats have a small keel or skeg but otherwise most jet boats have no underwater appendages. Therefore, if grounded at low speed on a shoal, the high reversing thrust of the UltraJet drives will usually allow self-recovery by reversing the boat out of trouble. 13. What about lobster and crab pots? Not a problem. Drive right over the floats as there is no underwater machinery to foul the float lines. 14. Are vessels fitted with UltraJets Manatee-safe? Yes, manatees will not be injured or cut by boats fitted with UltraJet propulsion when operating in No
