Look for fresh sign. Well used trails, tracks, and droppings are all tell tail signs of deer activity. I saw my first scrape this morning so look for those. Also there are many rubs on trees that are very visible. Even old ones are visible. As far as higher elevations, look for saddles. Deer will often use saddles to cross from one ridge to another.

You up can pick up relatively inexpensive game cams on Amazon that help a lot. I use Stealth Cam G30 model. It’s an older model now, but you can get them for $60-$70.

Best of luck!