Ok now, I don't want to be THAT GUY. But I've done the first couple of dungeons problem free. I don't use markers. I've basically been holding hate on everything by spamming overpower aoe and occasionally switching targets to pull more hate on mobs that I'm starting to lose hate on. That way, my dds can attack whatever they want since I'm overpower aoe spamming the whole group anyways.
However, I see a flaw in my methods coming up when mages start getting sleep spells. What am I gonna DO? Also, please judge me. I think it's pretty apparent from this thread that I'm doing it wrong.
I wouldn't say you are doing it wrong, because, according to you, it's working. With that said, don't expect that to be a viable solution throughout the whole game. You will have to be adaptable. There is no 'sure way' to do anything. (After all, it would become pretty bland, were that the case). Once you get to the stage where mobs can be controlled, you should have a few more tools to make you more adaptable. You would have to be careful, not only for yourself, but for other party members, to not gather the group near any sleeped mobs, as anyone using AoE will wake them.
I'm not very familiar with Marauder strategies, as I only have that class at 20, but the generals are the same. The only group member you should be battling for hate is the healer. By allowing everyone to attack just whatever is disaster waiting to happen in later stages of the game. Mark, focus and conquer. Although not required in the beginning parts of the game, the sooner you start to practice it, the sooner you will become efficient with it for when it will be needed. Don't wait until you have to learn it to learn it. People will have expected you to already have at that point. When people are attacking different mobs, it becomes very inefficient, some of the reasons being, but not limited to:
Each individual mob takes longer to kill, thus allowing them to inflict more damage to the party during their life cycles. This, in turn, requires the healer to heal more, thus pulling more hate from the tank.
Not only are you trying to keep your healer safe and alive, but also battling your other party members for hate, which wastes resources and cooldowns that could be better used to actually eliminate the threat. Also, if they do manage to pull a mob from you, the healer is going to have to spam heals on them much more than they would you (as you are a tank and designed to take hits more effectively) which is more unwanted hate focused on the healer.
In the event something unexpected would happen, you are less likely to be able to react the way you need to, due to micromanging everyones hate, as well as your own.
In short, Hate management is a responsibility of the entire party, not just the tanks. The best tank in the world can't save an unorganized party, and vise verse with the other roles. Trying to solo in a group doesn't help anyone. Good luck. :)