So i found a pretty viable way of playing ziggs on TT.
Runes : Marks - Greater Mark of Insight
Seals - Greater Seal of Clarity - will allow you to spam your "Q"
Glyphs- Greater Glyph of Potency
Quints - Greater Quintessence of Potency
Masteries : 21/0/9 I like to use flash and ignite for summoner spells
Items : Doran's Ring, Boots of Speed, Doran's ring, then depending on the fight either grab another doran's ring or start working on rabadon's. From there depending on the fight i would prefer rylai's for sustainability in team fights.
I'm still tryin different builds out but i found this one to be pretty viable. All i really play is TT and have about 1400 wins. Tho i am no where near a pro but have a good understanding of the TT map and how to play it. Try it out let me know how she works out for ya. ^^