If there appeared to be any confusion on my part I merely ask for water as soon as I arrive to avoid missing it - one of the other stations had water first and last when I passed, which I'm fairly sure matched neither!
Do them all
I tried to swim around Chichester once. Grazed my nose on the A27.
The other option is practising holding your breath. If you can work your way up to a few minutes at a time, you could break the swim into chunks?
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