Leotheras is very easy with any BM spec and a ferocity pet (I chose a spirit beast for the heal). Stay at max range during human phase, disengage and run away during whirlwind (it does a small amount of damage, so you can certainly sit in it for a bit). When he goes demon, feign death until the phase ends. Continue this until he splits into demon+human. Feign until about 10-15%, then pop up, blow cooldowns, and zerg the human down. Your pet will need very little healing, usually a mend pet at the end of the demon phase. I tried it as BM with a turtle at first, and although my pet needed no healing I didn't have the damage and ended up hitting the enrage timer. I was able to pet tank through the enrage with mend pet up the entire time. Unfortunately, enrage + demon form meant instant death.

This video of a hunter soloing heroic Vortex Pinnacle (minus the second boss and a few trash pulls) was posted to Reddit a few weeks ago, although I can't seem to find the original posting. You can safely skip through many parts of it. Some notes from the movie info:

- Took 12 hours (14 because he had to redo the final boss and trash packs because he hadn't recorded it originally).
- SV for trash for the CC, MM for bosses for the heal.
- Skipped the second boss. TBC rocket boots are necessary in order to jump between the platforms.
- Skipped the double Cloud Princes because they hurt.
- Did not use Aspect of the Wild because he didn't want to abuse the double dipping bug.

First off - Thanks to all the posters here, some great tips to be found.

Currently, I've done the following (My Talents & Glyphs are on my armoury) -

1) Marrowgar as a Worgen and as someone mentioned, he does seem not to spike you - I'll be uploading a video of it soon enough. You can pretty much stay in the cold flames they dont do much.
2) Koralon - Failed the 1st time when I realised I hadn't specced my pet but as Surv (7/3/31) went well I downed him on 15 stacks though I do feel it can better when the pet dings 85. Don't stand in fire! (I failed to fraps this too)
3) Archavon - This guy is pretty basic - done as MM (8/31/2) - when he gets my pet I Det until he drops my pet then just kite him round for the times thereafter healing myself through CS.
4) Sapphiron - Same MM spec - Move around abit so you dont get slowed by the sleet dropping down & Chim. Shot should heal through his debuff.

Is Fathom Lord Kerathress soloable as hunter? Cannot bring down the first add. At about 30-40% he heals himself and my Silencing Shot is too slow to interrupt it.

The title of the thread says fun and profit but I haven't seen any references to profitable soloing and was wondering which would be the most profitable at the moment?

I think you switched Tempest Keep and SSC around: TK has 4 bosses and SSC has 6.
WotLK bosses actually drop less gold than TBC bosses, probably because you'll mostly be soloing WotLK 10-mans while the TBC bosses are made for 25 people.
I'm really wondering though, how do you solo High Astromancer Solarian (3rd boss in Tempest Keep), if you really did? I've had way too much trouble with the adds, and that's while AoE-ing in a SV spec.

For my Strat, I kept myself in the door to limit the height at which she blast me & FD/MD'd onto my pet. Taking care to kill 2 main mobs that spawned. I'll try it again tonight & get some fraps (If it works) going

Never mind. just discovered that my assumption was wrong

Guess you didn't read my post with duoing trash that has a tot of 15% of dropping 10k+ boe's and respawn.

Morogrim is pretty easy, just FD the murlocs and Disengage when you're about to fall.
Fathom-Lord Karathress might be possible with very good gear, and a MM spec (probably easier after 4.0.6). Focus on the healer add, try to interrupt his Greater Healing Wave, but I've never managed to get a Silencing Shot to him before the cast ended (0.9 second cast >.>) - That doesn't matter though, cause it's possible to out-DPS him, I've done so in SV, but died before I managed to kill him. Short version: SV doesn't heal enough, MM doesn't dps enough, BM does neither. Try it after MM buffs in 4.0.6.
Then there's The Lurker Below and Hydross the Unstable. I've never tried either of them, but Hydross seems hard (most likely impossible) to solo, and Lurker seems like you can actually solo him. I doubt I have to mention that Vashj is not soloable because of the high amount of adds spawning =P

Hydross : Down to 50% but debuff up damage 600%, ii think it's impossible
Lurker : fd to reset adds, disengage bump
Karathress : focus healer, do lot of missdirection, after kill the healer, i kill the hunter to stop the add pop.
Leothras : fd during demon phase, the last 10% is really hard, try to keep your CD.
Morogrim : FD to reset add, disengage the fail.

I guess I did but I haven't been able to figure out how to get Magmaw and Omnitron down in order to open the gate to Maimgor.