I've had a McGard Prop lock on my '98 FastStrike 150 since it was new. The only problem I have ever had with it was the round plastic protective dust cap came off, and that may have been my fault - I had just removed and replaced my prop, and I may have not snapped it on completely. However, a call to McGard had two more sent to my house free of charge (and very quickly), and they have never came off since. Nobody has ever attempted to steal my prop since I put it on..... and I park at hotels regularly during 2 day tournaments. Well worth the money. I'd buy it again (and will in a few weeks when my new Nitro 929 comes in).
cajunram1