I was so excited to get my GPS and get some feedback on my stroke. I went to a kayak shop and the guy said the Garmin etrex was great and he had not heard any problems with leaking. BUT watching the speed jump around with the delay did not really give me any real time data that was useful. With the "average speed while moving" it is cool to see at the end of a long run but when you push really hard the number have a delay before they move so I seemed to do just as well with my stop watch on the known distances I am paddling.
My rowing buddies say that the impeller driven devices are the way to go to watch the stroke and that if you are trying to determine your best stroke on the flat that is the way to get real time feedback.
I got this from the archieve:
"What I love about the Speedmate is that if you are working on stroke technique and tuning (e.g. try a different blade angle, or slightly change your mechanics), then you see the results of the change(s) immediately. I find such feedback very useful. I use my GPS but not so much for stroke tuning and improvement. The sampling on a GPS tends to make "cause and effect" stroke tuning much less effective IMO."
Do different GPS units have settings so you can get an averaged number that updates more often so you can get "smooth" but responsive numbers and arent just delayed and bouncing?
The whole speed on the water vs landspeed is another can of worms I am reading about in the archieves. Thanks for reply