I'm doing stealth hacker right now, 5th playthrough.

I usually hack nearby objects rather than the people themselves. Other people have already noted bringing trace down with memory wipe or sonic shock, but I usually don't hack the people at all. Catch is the approach I use needs throwing knives or a silenced pistol. Preferably knife, since it triggers detection a lot less. Distract with a CHOOH2 tank, then overload it when they have it right in front of their face. Distract from line of sight to sneak up on people and take them down. Lure them in front of traps like falling crates using Bait or nearby distractions like lights. When there's no hack ables nearby or convenient, the knife comes into play.

Bottom line is directly hacking enemies is either a race against time with some tools to reset the race or an endgame strat. Other hacks and I think a perk or two provide ways to do reset trace, and AOE perks and hacks can make the trace progress moot if you kill everyone fast enough, but if you want to go slow and stealthy, you'll need to be more crafty and indirect with your strats. Use mostly covert hacks as distractions, with some combat hacks in your pocket for if things go south.

Make sure you do a ton of side content like NCPD scanner jobs, gigs, psychos, etc. That will net you the eds and parts to keep your cyberdeck upgraded. You'll be using ultimate quick hacks in no time.

Side note: the Araasaka deck slows trace progress. Good choice if you want to stay under the radar