Yeah I can secure almost any building if I strategically put two claymores down. At the very least if they go off but don't kill the person I will still know someone is coming.
I thought those things were horribly cheesy, they never seemed to work for me. I swear I threw 200 of 'em before I picked up the "detect 10 people with the recon mine" achievement.
Or you can just go UMP45 + Hardline + UAV. Less pain.
UMP has great range, w/o Stopping Power it's a 3 hit kill at any distance. It has a bit more recoil than the rifles but it's not too terrible.
If you only use UAV in Hardcore then you're doing something wrong. Hardcore is the only place I'd not use it...the majority of people have Cold Blooded on. In SC every two kills (assuming you die) is a UAV in the sky, awesome for the team.
I'll chock it up to a difference in play styles, when I'm using a run and gun class UAV is fantastic. Much smaller chance of running into someone you weren't expecting.
I've never had a nuke either, ive tried but once i reach the chopper gunner i do horrible with it and dont get enough kills, i'll be lucky if i get 5 kills out of the chopper gunner so that leaves me with needing 9 more kills, yea right.
i have had a 26 killstreak so im technically capable of it but still seems distant