We could use some more information. Unless I'm missing something, you don't state if you're the Tortos tank or the add tank. I'm also assuming you're two tanking? "Tanking strat" is pretty vague.
We run Paladin/DK as our tanks. I'm usually on the boss full time and our DK picks up the bats. I run pretty standard glyphs/talents (FS/AS, BH, FW for glyphs and DP, HPr/LH for talents). Tortos tanking is pretty straightforward and the only time it gets annoying is on the pull because Snapping Bite will eat up your shield immediately. I usually pool up 3 HoPo, ShoR, and then use my Judge/Crystal macro to get a shield right away (and pop a defensive CD for good measure).
I haven't been add tank ever so not too familiar with that, but I imagine you can just sit on your Holy paladin and drop a Consecrate. Our DK holds Tortos for a few seconds before bats drop to build up Vengeance, so you can consider doing that. As for glyphs, if you're having issues with bats going crazy, Consecrate glyph MIGHT be helpful?
If you're solo tanking, just have your holy paladin stand on top of you whenever bats come down. Your Vengeance + Consecrate + LH should be more than enough.