My name is LolWutBigJ and this is my first quide on mobafire.
I made this pure for fun to see if there are any other ways to play gangplank.

Well for runes i took some obvious choices.
I dont see what else is there except for Mark of Desolation.
I chose for crit chance seals to get a little extra early game crit chance, wich might give you the adventage to dominate your lane.
Another option is Seal of alacrity because gp can be very mana dependant early game so you might not be able to use parrley.
I chose glyph of focus because you might end up getting outranged or outrun by champs then having parrley off cooldown as fast as possible is a must.
You can also go for Glyph of replenishment to solve gp's mana problems
As for quintessences, the best option is just Quintessence of Furor

Pros
Good early game crit dmg
Very sustainable in lane
Good late game tank

Cons
Very Mana dependent

It is possible to jungle with this guide.
It solves gangplank mana problems, Although you need to build wriggles lantern instead of executioners calling wich might result in lacking crit chance

Take:

Ghost: very usefull for ganking
Exhaust: Gives you that extra slow, and cancels out the carry late game
Flash: easy escapeability
Clarity: Solves your mana problems

Dont take:

Teleport: even if you are solotop, this build is made to sustain in your lane
Heal: you already have a heal...
Cleanse: you already have a cleanse...

I hope you will enjoy this build.
and remember, i made this just for fun
Dont try to play this in Ranked matches