I hunt every weekday during the Montana season since I am retired.
I hunt with a pack instead of vest for many reasons.
I like Granite Gear Crown 60---60 liters and has lasted a decade of hunting.
For pants, I hunt lots of wet cattails and like Grundens Commercial rain pants at $99.
For a shell/raincoat I like Simms which is often thought of as only a wader company,
but they also make quality rain gear.
When hunting hawthorn/briar country, I like Filson tin chaps.
Mine are over 40 years old and still going strong.
For water, I simply re-use soda bottles...a big 2-liter bottle for hot September hunts
and smaller 12-oz bottles for cooler/shorter hunts. Lightweight and essentially free.
For a dog bowl I simply use a plastic bowl.
The other item I always carry are Garmin inreach for emergency text messaging, a first aid kit, a compass, bear spray, 2 working headlamps.