I refuse to play Dom when I'm by myself, it's pointless. Randumbs flip spawns the whole game long and it's basically just a game of cap/recap while dieing a million times to some killwhore who's camping any old flag.
I prefer KC because there are fewer campers than TDM because you have to get those tags. And if I'm running specialist, it's a great mode to try and get a MOAB because games go on longer when you or others aren't getting tags, therefore improving your odds of getting that 25 killstreak before some team hits the 65 tag mark.
There's no real strategy other than checking all your corners. Boosters love KC tho, because they can tac insert and then die on purpose to get their own tags back, giving them 250xp. It doesn't bother me tho, because I love the free kills.