The way that I retained water in my body for up to 6 hours WITHOUT discomfort,,,,,,,,We would eat a couple of Fig Newtons every hour. After 6 hours, my eyeballs were yellow but I wasn't in discomfort and I could walk normally to the Head once the bird was secured.

And no, drinking urine is NOT a solution to dehydration. Keeping a wet bandanna around your throat and sucking on a pebble or button helps to ease the symptoms (at least psychologically speaking).
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QMC, USCG (Ret)
The best luck is what you make yourself!