Hi, my name is Holyshiftlock. I play on EU West. I've made several builds but now i want to make the best build i've made so far. So here i am. Making my Gangplank build. I play this champion for a long time. Its my 1st champ and favorite. So good luck building this! Its perfect build.

For runes use: -[*] Greater Mark Of Strenght
-[*] Greater Seal Of Furor
-[*] Greater Seal Of Strenght
-[*] Greater Quintessence Of Alacrity

For masteries use
Offense: 21
Defensive: 9
Utility: 0

Pros:
Parrrley - This one is a very good harrass. Use it very often. Consider getting a blue buff. This will give you the amount of Mana Regen u need.
Raise Moral - This buff is very nice for teamfights. Pop it immediatly when you engage.
Canon Barage - This is a very usefull aoe for teamfights. Place it right and it can save/help you to get out or get a kill.
Cons: Gangplank is easy to counter by Olaf. Please if u do ranked Gangplank do not use it when Olaf is in enemy team.

Last hitting with Parrrley will give u a nice amount of extra gold. Use it often and you can easily outfarm any solo topper.
Raise Morale will always help a little. So does youre passive.

Solo top: AD Top:
Teleport / Flash. This is a very nice combo. U can escape from a fight or engage a fight.
Flash / Ignite. This can end up being a kill. Ignite is very helpfull when an enemy is gonna run. Flash can get u close and get a kill or escape easy.
Bot: AD Carry:
Flash / Heal. This can get you a little health u might need for a kill. Flash can get u close and get a kill or escape easy.