Only other option is to make your own.
The boom mounted ones are brilliant, but there are a few hassles, getting them water proof.
The latest one I'm making has only 3 components, battery, lillygo display and GPS receiver.
No really tricky connections, and you can make a housing out of foam and fibreglass.
The hardest part is programing the Lillygo, but there is a detailed manual.
Just check out the "another DIY GPS" thread..
The display is big, easily readable on the water. Gives you all our divisions, even on the water feed back for alpha proximity, hour and NMs. on top of that it's highly accurate, far superior to the GW60.
here's my splash proof effort, just used grorilla tape to seal the display against the enclosure, and cover the charging and on/off ports.
So this is splash proof, and I wear it in an aquapack on my upper arm.
The WiFi is for downloading, config adjustment and firmware upgrade. But the SD card is accessible if needed.
My watch is getting iffy. Yes , I've cleaned the contacts. It's 3 years old now and well used. I believe that's a good life for these watches.
