Here are some links to youtube sites that I found useful.
Dock-N-Loc – an outboard steering lock that protects your entire boat from theft by disabling the steering.
GOST Marine – a fine resource for marine alarms, monitoring and tracking systems.
Poseidon Boat Alarms – the website appears to be down, but the videos are a good resource.
Let us know if the sites work for you, are informative, and how else we can be of service to you.