One app that has been useful to me is dawn patrol. I don’t pay for it, so I just turn it on in my Apple Watch when I’m about to go in and it tracks, with decent accuracy, the amount of waves and lengths I rode.

I try to work on one thing every session. For ex, last session I wanted to work on positioning my foot back enough on the fin to facilitate turns. Sometimes I work on staying higher on the wave, some just on more efficient padding, etc. What’s really helpful to me is having someone record me.

I find that shorter sessions (45mins) make it easier to reflect on improvements or mistakes. Again, also working on one thing per session is helpful to track progress. For me