I have owned my 2005 Challenger 180 boat for 4 years - put her back into the water this weekend and upon initial acceleration beyond ~10mph (basically outside the no wake zone), the engine revved well into the top end of the rpms but absolutely no acceleration. Was a decent amount of vibration as well at the same time. We have the boat in a fairly shallow (avg 15-20') fresh water pond and have certainly been no stranger to weeds/sticks being sucked into the impeller, but have never experienced what just happened. From similar posts on this forum it sounds like best case it is debris in the impeller and worst case some pump related? I have minimal boat engine knowledge, but wondering if someone here can instruct on how to troubleshoot the issue before pulling it out and bringing it in for service.