...and remember the throwaway turn at the end of the ride (whatever board you're on).
Coming towards the end of your ride? Well, jam your foot on the tailpad, put all your weight on your toes, really spin it around and try and make a 360 (or whatever variation takes your fancy) ... you won't make it but you'll have learnt a lot about how you and your board interact to turn.
Even better is to try when you're not at the end of the ride and you've still got some speed and somewhere to go after you turn (but hell, if you've spent the last hour trying to catch this one wave, don't waste it...)
You might even make it
