I'm on embedded software industry since 90's and Connect IQ SDK took my attention cuz I'm a master athlete on SUP race, most of us used the 910XT for training, the downside is that we basically use Run Profiles while paddling, and we would love to have a few specific metrics to paddling, unfortunately looks like we're not able to sample on accelerometer, I can understand why, since looks like you still do not have low level/native calls to peripherals/sensors.
The metrics is a little bite similar to available on swimming, it should be:
1) Paddling Side Count (Left and Right);
2) Paddle Count;
3) Air Time (Recovery -> Catch);
4) Power phase Time;
5) Glide in Meters during Air Time;
Regards,
Rogerio Wagner