For some of us older guys with enlarged prostates, anything beyond 1.5
hours can be a problem whether hydrated or not. Also, intentional
dehydration can lead to kidney stones, and you don't want to go there.

Carry water to sip and either a gel bag or Little John container and
learn how to use it in flight - removes the stress and solves the
problem. According to Sporty's, they have documented proof that the
Little John has been known to extend the range of a Piper Malibu by 500
miles :-)

It would be nice if somebody in this NG would buy one of each type of
container, drink a lot and then go up for 5 hours with a companion of
opposite sex and give us all a Pirep on available technologies...