chaparral to my opinion is hard to hunt. best like SurfNHunt said, look and study the terrain, try to approach the highest point you can get.
then scan the surrounding areas with glass, but while scouting look for sign, tracks and scat. look lots of sign, look for bedding areas, and feeding areas,
after the first day of deer season, until the rut deer will head for cover, thick rough terrain. don't waste your time trying to stock in chaparral the deer while hear you a mile away.
they will general stay put if they don't feel threaten, don't chase them, pick a high point with in bow range and sit tight.
that's the only reason I like the high country with pines, easier walking, recommend a tree stand, or natural blind, or even a ground blind.
when hunting I will walk the ridges of mountains, and glass way in front of me. in hot weather deer don't like to move, they will bed down in the shade,
or thick cover, look in shady areas, or lots of cover, use quality glass and look for parts of the deer, my favorite is those big ears, or white spots, or antlers..
then magically you will see it. stare at areas with patience, watch an area for hours.
most important of all keep the wind in your face, so they don't pick up your scent.
I did a test long ago when I was youg, watching two does below me about a 75 yards, I snap a twig even so lighty.
when I broke it they looked right at me but I was well hidden and did not move.
if you don't move, they have a hard time seeing you.
they first try to scent you, hear you then look for movement. those three senses.