I have done the hike 3 times, but last time was 10+ years ago. Doing the day hike 8/18/17 with my brother and my nephew.

I have a Pur hiker filter (Pur was purchased by Katadyn) that works fine, but is probably heavier than needed. Specs online says it weighs 11 ounces. I'm trying to reduce gear/pack weight.

Does anyone have experience with a lightweight hiker filter that works well on the Whitney Trail?

MSR trail shot looks like a good option.

Has anyone tried Aquamira?

Any advice, tips, plans for reducing pack weight and staying hydrated on this day hike would be appreciated.

Best spots to get water other than trail camp?
Last spot to get water on switchbacks?
How much need to get to summit and back to last water?

Thank you,
Bruce