I purchased the C1003 device. What is the recommended way to display the unit if I need to send a distress signal? Hold/mount the device in my boat? Or attach a line to the device and float it on the water. Thanks.

This is Steve Caldero from Sirius Signal. How you would display the C-1003 depends a lot on your situation. Displaying the light at the highest possible point on your boat increases the distance that it could be seen, it can be run up a mast on a sailboat or displayed from a fly bridge. The handle fits in most rod holders and will continue to flash unaided. If you need to abandon your vessel it floats upright and continues to flash SOS.