this is a guide for gangplank agains all type of enemy team combos.especially when enemies have a jungle gangplank too.tons of hp and armor especially early,tons of dmg with parrley and unkillable by mages.

red:armor pen marks because u need armor pen at all ad champs(u could also take critical chance but i dont think u need it,especially after the new mastery trees)
yellow:armor as in all junglers
blue:m.resist per lvl because enemys magic damage scales with levels due to ability needs
quints:here we play.take armor if u have difficulty in jungling.take damage,movespeed whatever u like.i prefer armor pen but its really the players choice

well.u got enemy gp jungling.even if hes fed and rushes an early infinity,with your tons of armor,dodge from tabi and just a belt for hp boost u can kill him 1v1 with ease.i won such a fight with him having red/blue and me with nothing.gp has dmg even without dmg items so rush survivability asap! with atmas u get near 200 ad and good crit chance.with red buff(u r jungling u MUST have red) u dont need crit to get gank kills.atmas and infinity=op dmg.then just some mr with force,imba hp regen and ms too.if game goes too late u can sell wriggles and get a trinity.its superb on gp but just too expensive to get it early like i see in other guides..thats all about items

tell mid to pull blue kill blue.ure lvl 2 u got E and Q.if u got hp u can gank top and get a kill probably...farm wolves then gank mid,preferably get a kill there too,kill wraiths and golems(not red) and go back to buy items depending on the money u got.go get red gank bot top mid and even enemy jungle.if u got lifesteal and mp u can do anything,gp is one of the best jungle gankers in the game.i usually gank more than i farm in early levels,depending on first gank.i get kills i gank more,i dont get kills i farm to xp asap...

PROS:
-imba health and armor(especially early/mid game)/m.resist
-imba dmg without too many dmg items,thus lacking survivability
-able to dominate a game early and easily

CONS:
-wriggle's nerfed.not too bad since u get the 3% lifesteal lost due to nerf by the new masteries,but anyway u got no good lifesteal(not needed imo)
-no room for trinity which is op on gangplank.at least not without having to sell a core build item
-enemies may surrender at 20.its not fun