What's the best way to approach monsters at LHC?

Best way to approach LHC is to not party with randoms. Jokes aside, fighting together or separate doesn't seem to change all that much to me whether or not you have main-attack mobbers or secondary-attack mobbers. I party with my alliance at LHC and we have no qualms fighting together or individually. From what I can time at LHC (barring short downtimes where members enter CS to get their EXP coupons), both fighting together and separate result in similar experience rates. Of course, LHC's only been out for not too long so it's hard to get a long term figure on what is the ideal way to fight for optimized experience gain.