In the Store: If you're not actually through-hiking the PCT, do you really want an ultralight tent that's smaller than a birdhouse and weighs less than some truck-stop steaks?
Make a list of must-haves and stick to it: Do you want to be able to sit up straight? Are two doors a requirement? How much space do you need for gear?
In the Field: Use an accessory "footprint" (available from most manufacturers) that lets you pitch your tent fly onlysaving considerable weightwhen severe weather and/or bugs are not in the forecast.
Avoid leaving your tent pitched in strong, fabric-degrading sunshine for days on end.
Treat poles gently when folding and unfolding; chipped edges can damage the precise fit.
At Home: Hand-wash with a mild soap and warm water.
Thoroughly air-dry to prevent mildew.
Store poles unfolded to take tension off the elastic and extend its life.