Any tips on keeping cool in the heat?

One thing that's made a big difference for me is wearing a damp neck gaiter or cooling towel and just re-wetting it throughout the day. Keeping your neck cool helps a lot because you've got some major blood vessels close to the surface there, so it seems to bring your whole body temperature down a bit. I usually soak it in cold water, wring it out, and throw it back on whenever it starts drying out. If you've got a cooler, keeping a spare towel or some ice water handy makes it even better. It's cheap, simple, and honestly one of the easiest ways I've found to stay comfortable when you're outside all day. If you've got any flexibility with your schedule, starting earlier can help a ton too. Knocking out the heavier work before the afternoon heat sets in makes the day a lot more manageable. Just make sure you're still within your local noise bylaw hours and not waking up the neighbours. Between an earlier start, plenty of water, and a cooling towel, hot days become a lot easier to deal with.