Depending on the raids, yeah tic toc clock Hot t1 raid is easy to bot except the final mob the adds, last time i tried, bum rushed my bot army and since they arent mezzable was chewed alive but i have autocleric now so will be trying soon again. the grounds one is real easy aswell, actual easier then tic tok but the one you want is hot upper which can almost 3 box it. VoA depending on make up the t1 raid could be a pain (i have a macro that automates it) but gonna be trying that one soon aswell again. the t2 valley raid i have herd is really easy but havent tried it. NToV im not sure all dragons can be done but the easier ones should be ok to 2 grp. depending on flags if you can do bg2 its a tank n' spank easy farm, and the first t4 raid is a tank n' spank too with some easy mechanics.
last time i tried hot+ raid my box army was one grp of 100's and 1.5 grps of 85 to 92 lvl toons.
my 100 grp is zerker raid geared, warrior,cleric,shaman,enchanter,rogue.
bot army was warrior,rogue,bard,cleric,rogue,mage,wizard.