So last night I was able to get in for a bit and do some frostweave farming in Sholazar. I haven't had much time to play recently, so it was good to be able to.
It was the first time where, for an extended period, I've had to deal with the Lock and Load CD, as well. Truthfully, it isn't as bad as I'd feared, but at times, it is still a pain in the ass.
During about mid TBC, I'd developed a two gear system utilising downranking, which enabled me to trap with a 1:1.5 rotation, and still maintain a reasonable (5-10%) rate of mana efficiency. If I was still able to do that, I truthfully wouldn't need Lock and Load at all, but unfortunately of course, I can't.
Last night I reflected that Lock and Load really needs to be given its' own button at this point; if it has to be on a CD at all, I'd greatly prefer to be able to choose directly when I use it.
What I eventually came up with was to start using Frost Trap as my staple in scenarios where I know I'm likely to be dealing with multiple adds, as opposed to Immolation. This way, even if I blow my Lock and Load proc entirely on the first mob, I will still be able to kite adds. I also never use Steady Shot, pretty much no matter what. Its' mana use is horrible.
BTW, if you ever need Frostweave, I recommend farming the undead around Freya, at the river delta in the Lost Lands. It's still fairly slow, but I got 5 stacks in probably 90 mins-2 hours, which isn't too bad.