There is a video on Youtube that shows how easy it is to use the speedpuck. As far as GPS are concerned, I can't imagine how anything could be easier.

Never had an issue with an upload.

What he said. I use mine to also satisfy the compass requirement for distance racing. I also have a GPS on me, but in general messing with it while driving is bad. Can read the big numbers at a glance. I took the $$ route and bought two, and stuck one on either side of the boom. Can easily hit the buttons to switch modes, nothing up front to hang on stuff. I've added the velcro to the cabin sides of my F-27 and use the dual Pucks there too - can't see the instruments from the floats, can see the pucks... There are some sweet tacking brackets that folks come up with to mount aft of the mast.

I have an SC-1, and it's nice but it never helped out much on the 20. We had a bracket that mounted to one side of the front beam. During Tybee the salt spray continually changed the settings, and then a wave took it off the velcro. Got to it as it went bouncing along the tramp. Another time at the end of an Annapolis-Oxford a spin set got a line on it and flung it up in the air and overboard. Man overboard! So the velcro can be defeated, lash things if you don't want to lose them.

Actually, I'd love to the same - but why do you think, an iPhone could be solution? First, I assume you just get two files (.gpx and .mov), which you have to combine and align somehow. Secondly, can you run an app and the camera at the same time? Third, how are you going to mount the phone secure and waterproof - in a way that you can touch the screen? I'll upload soon a video from my GoPro where we capsize into a turtle ...
I have the camera and I have a Garmin 301 which supplies all necessary data. What I dream of is a 4 segment split screen: footage, speed (or VMG), course, and wind direction and speed. Remains a dream, I guess.

iDry Waterproof Phone Case for iPhone 3G / 3GS /4

... didn't know about this device, thanks! However, it's still not safely mounted.

I have a speed puck but for race analysis I really like the Kattack approach:
1. Uses cheap GPS (does not work with Speedpuck)
2. Everyone turns in their unit so you can see how you compare to other racers. You learn a lot more than just looking at your own tracks.
3. You can upload the races to the web where anybody can watch them.



Velocitek has their own priprietary software that does the same thing, but it supports only the velocitk units and I don't think there is anyway to upload to the web.

Kattack is good for a club or people that regularly race against each other.