Thanks for all the input. This is now my preferred way of lap counting, and it's very effective.I even remember the debates at each bike !!
But after Midmar I will leave the pool for about 5-6 months and go back to the Gym.
Midmar swim was good. I don't push it any more after my little heart oopsie on #26, and I discovered this swim was #31 not not #30.
Time was 39:29 - came in 44th out of 94 in the men 61-70 category, but at 66 I am getting towards the 70 end of the category and the guys at the 61 end are bloody speedboats.
A pic of the ladies race before mine taken from the start, so the finish is 1 mile away.