Players of League, may i present to you, the ultimate Trundle build!
Either 
or 
and then 
Boots either 
or 
Results: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1944167194/208297539?tab=overview
check out the damage Dealt and the Damage Taken and the Damage healed.
the runes and Masteries i used were specifically made for Jungle Focus and i use it on all Weak early junglers and/or Devourer jungles.
Not Troll Chief, Troll King! KING!
Also I would swap it for 
when slows stacked.