Well we took my dads new boat out today for only it's second voyage. Man it was cold this AM!!!! We trolled for stripers for a bit then we were in the process of moving to a new location. We just took off and the water was 16' deep. We hear a booom and the boat revs and slows. Water depth still 16-17' deep. Dad raises the motor and the blades on our piranha prop have been torn off!!! After more examination the fin at the bottom of the gear case has a slight bend to it and a chunk out of it. We did have a spare prop on board....I pulled a good portion of my clothing off....did I mention it was cold....and got the prop changes in 16' of water in the middle of no where! We have NO clue what in the world we hit. Depth finder never moved. Now we have to buy a new lower gear case for our 2003 90 hp Honda a long with new prop blades. Sure that won't be cheap!!! One thing I don't understand. Our older boat with out power trip...we would leave the motor unlocked in case it ever hit anything it could pop up. Sure you can't give it much power in reverse but SO WHAT! Power trim is nice..sure....but I think you should have the choice to have it unlocked so it can pop up when you hit something. Dads pride is hurt big time right now. After changing props we didn't fish much longer...he wasn't much in the mood any longer. So todays fishing trip was ALL BAD!!!