How do I take advantage of black not playing Nh5 here?

I have been playing the bayonet system in the KID for about 5 months now, and I am still learning stuff. I haven't learned really any theory, but I am learning ideas. Can someone explain why nh5 is the mainline here? Why not Ne8? Do i take the same approach as Nd7/Nh5? Since Ne8 is not the mainline, can you explain why?

Nf4

No. White can not play that. You offer no reasoning behind such either...so I can not even guess what you are thinking.

It's just a move, not exactly a blunder, just follow the natural KID plans.

I think Ne8 used to be the mainline, but black gets into some trouble on the queenside.

Another line you are missing is a5, instead of either Nh5 or Ne8.

I mean BLACK

i dont mention a5 because white plays Ba3 axb4 Bxb4 gives white a  serious queenside intiative. He is going to play a4-a5 if black plays b6 preventing c5, and if black doesnt play b5 preventing c5, then white probably plays c5 in one go and has a dangerous position

Nd7 seems the same as Ne8 - the knight goes back to f6 anyways.

Well, a5 is a line, and I don't know if it's refuted, although it definately doesn't equalize.

Black's K-side attack has practically been worked out to a forced mate! That is from BOBBY FISCHER in game 30 in my 60 memorable games in a similar position (black pawns on f4 and g5)

newbie XD, but seriously I don't care lol

yeah looks like the knight has to go back to f6 anyways agreed.

the a5 line gives white a decent advantage (which i dont care about), visually I like white's position, its all about overprotection of e4, and infiltration along the a-file and try to make use of the weakness on c7.

I've never actually had the a5 line in practice, and never had Nh5 OTB. Everyone played Ne8 against me back when I was still playing the bayonet. Now I play Ne1 instead of b4, and when you opponent doesn't understand the position they can lose in 20 moves sometimes.

Did you look in the game explorer here? If not it's time to start using it. There aren't any explanations but at least you can see which moves are most/least played and start going thru whole games (with no notes) played with whatever opening you're researching (of course annotated games are much more instructive). 

You should consider buying Fundamental Chess Openings by GM van der Sterren which explains the basic ideas of each opening, rather than focusing on reams of analysis with no explanations (like ECO) Even MCO-15 would be better than nothing, there's a very short introduction to each opening that briefly describes the openings characteristics and major variations.

Check these links out and then type Kings Indian Defense Bayonet Attack into a search engine to find more articles on it. The search engine is your friend - get acquainted with it

http://www.expert-chess-strategies.com/chess_games.html

http://www.speedyshare.com/search/kings_indian

http://bishopsbounty.blogspot.com/2008/12/kings-indian-defence-e60-e99-opening.html

http://www.cln.org/searching_faqs.html

I don't know much about the KID but Nd7 seems better than Nh5 as it prevents c5.You can play an immediate c5 after Nh5.

Ne1 gives the same headache but is more fun!!

After b4 Ne8, Black is just going for the attack, while defending c7 and d6, essentially leaving the queenside to fend for itself. It is pretty complicated.

Nd7 may be sound. I dont see why Black should take with dxc5. He should continue with f5.

a5 is an OK move. @shepi, in your diagram, instead of Ne8, would Nd7 work? Just put your knight on c5, and all good will happen :)

After Nh5, wasn't the main line Re1? Doesnt matter since g3 is another move, but just pointing it out.

Anyways, After Bf3, lets try h6 as a move. Ne6 Bxe6 dxe6 Qc8. Now the only move for White is Nd5, where Black can take the knight, or try an interesting exchange sac. Qxe6!? Nxc7 Qxc4 Nxa8, and White has too many pawns hanging, e.g. e4, b4, and the knight on a8.

The position is interesting. 

Anyways, back to your question. You can't really take advantage of the other moves, because they are more or less sound, or at least not losing completely. 

Nd7 runs into a5, when d6 will be undermined with a capture on b6. An immediate Nd7 instead of b6 is possible, but I don't think it's that good.

the immediate ...Nd7 and a later ..f5 (which is the plan after all), falls to Nf3-g5-e6. The knight ca be traded of for the light square bishop, but the pawn on e6 is not a weakness.

The black knight on h5 cannot be taken advantage of with Ng5. Because of ...Nf6, a later ...h6 and then the knight's return to h5. This is a loss of tempo for white as it is still's whites move but this time, with a black pawn on h6. Hence,10.g3.

Ne8 is OK 

9...Nh5 (as opposed to 9...Ne8) induces White to waste a tempo with Re1.  This more or less what Pellik said.

@pellik. Sorry my fault, I should have been more explicit.(I felt it was implied) As you mentioned, Ng5 is only a good idea when e6 is a hole. Despite the queen and bishop battery, which I acknowledged, I still strongly believe Ng5 to be a waste of time.This is due to ...Nf6, an imminent ...h6, and black can play Nh5 if he wished. This leads to a position where white is actually down a tempo! (e.g. Ng5 ...Nf6 c5 ..h6 Nf3 ...a5). I very rarely use computers to analyse, nonetheless my computer program gives 10. g3 and 10. Be3 as the best moves. If 10. Ng5 was really an effective exploitation of the battery on the d1-h5 diagonal, it would replace 10.g3 as the mainline.

Based on the generalisation that e8 is a poor square for a knight, I assume you would concur that f1 is an equally hopeless place for such a piece. Yet, Nf1 is a common move in the closed Ruy Lopez.