I'm not R50 yet, but from what I understand a lot of the issue is the AoE attacks of monsters. Basically ranged classes avoid those attacks while still doing damage, so healers aren't as strained as with melee dps.

Here's what I would do if I wasn't an archer: step back and heal MYSELF quick, then go back in for more action. I really don't feel like it's that hard.. if I'm in a group on my archer and I get aggro and get hit, I just stop dps'ing to get my hate down.. then I heal myself to full and go back at it!! Easy enough!! And now you can even see when your hate is low enough to start fighting again!!

Well, that's just what I would do. If anyone has any comments or suggestions, or actual melee dps experience, I'd like to hear it. Especially if there are R50 LNC, MRD, PUG, that have been successful with this technique.