Tro's are super easy to own with a tao, i have a rb water water L115 and juts last night took out 3 120+ 2rb tros in succession in pk jail all of them with 8 socs and fully super.
My secret is this, set your Rb water/fire up for mellee with the Str and Agil atribs the same as a tro, then dump everything else on Vit, then buy a gourd to give you some spirit.
My water had 6K Hp and 900 mana, i use longhammer and guard whore them. When they atack the guard, jump in and smack them in the head, speed away and do it all over again.
With a guard hitting them for 500->900's and you hitting for 5 and 6K you soon own them silly.
I have sold all my tros and warriors and have built me 5 RB water waters 125->115+ set up just as above for pking, each one has 5 socs and full supers, when i have pleveled them to 125 again i will Rb some as fire and some as water, Oh and having a 130 archer does help a lot with this setup.
I wage 1 man wars agaisnt entire guilds and close them down, 5 chars with 5 seperate guilds they can never enemy them all and i go and slaughter anyone i can find, they change enemies and i change chars. My best so far is 2200 kills for 20 deaths in 3 days.