"...stay the heck out of the way of commercial traffic..."

To paraphrase Joesph Wambagh, "you gotta pay particular attention to the SIZE of the commercial traffic."

Cruise ship vs smaller barge . If anyone is interested, there is a hilarious story written by a passenger on the cruise ship...

Regarding Glo-toobs.

Yes, they work underwater. No, they don't float (having just played with them). There's also no easy way to clip them anywhere, and they're not all that bright.

I'd suggest a dedicated strobe.

Like the line from the movie Capt. Ron: "Don't worry, they'll move out of the way. I learned that driving the Enterprise" (said while in a 15 foot motorboat approaching an oil tanker)

On that note, for a dedicated strobe, Amazon.com has the ACR FireFly SOLAS Rescue Strobe in stock at less than list. I might put one in my flight bag.

There are also a couple on e-bay for a buy it now price of $57-58...

Ya gotta love Capt. Ron!!!

I bought a few of these flashers.
And attached one on each EDC backpack I use, either for walking or biking...
Reason for purchase :
- type of batteries already in use with some of my gear;
- small enough to always have one
- a small flasher in the dark is far better than no flasher at all.....

I really love online stores, who advertise for flashlights, etc.., without mentionning the type of battery, run time and other futile specifications...