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Lost it on a turn yesterday; must have rotted off. Pic's below. If anyone knows of one available, please let me know. I've contacted Malibu, the suppliers, and the first fifty dealerships in state-alphabetical order but they don't seem to exist. Also, if anyone can suggest how they were attached and I can re-attach one that would be helpful.

Just got a 2005 Response LXi and during water test noticed a hum and vibration between 30 and 36 mph then it goes away. No hum or vibration under 30mph. Had a pre-purchase mechanical and electrical inspection done at the local Malibu dealer. I specifically asked to have them check for the hum/vibration. They indicated shaft seal is good, shaft itself is good, prop is pristine (Acme 13X12.5) and they say tracking fins look properly aligned. Their explanation was hum and vibration caused by the tower (tube style). The boat had previous damage to the hull, prop/rudder/shaft and fins. All were replaced at the same dealer that did the inspection on an insurance claim to the time of about $14K (Canadian). What are the chances that the hum and vibration are coming from the tower as the tech indicated on the report; or the non spec prop being the issue (spec according to Malibu is 13X13); or maybe the tracking fins actually being slightly out of alignment (that can’t really be noticed on visual inspection)? Boat looks great, runs great (other than the hum/vibration) and is pretty low in hours at about 450 hours. I appreciate any feedback from anyone who has experienced the same issue or had thoughts on the potential causes.

Front tracking fin broke off when my son ran boat on trailer with water in boat. My question is: Did Malibu install nut plates in hull within fiberglass for the tracking fin bolts to screw into or does the bolt screw into the fiberglass? Other posts not clear on my 1998 Repsonse LX. Also, specific hardware p/n's or where to source would be helpful. P.S. i'd prefer not to remove middle tracking fin to see how it's mounted. I sealed holes on front tracking fin so I can continue to use boat. Thanks!