WvW roaming build
First of all: do you have HoT? If you do, there is a recent thread regarding that topic just 10 threads below yours:
Keep in mind that most ele roaming builds lack the mobility that warriors or thieves have. You are never gonna catch kitten / GS warrior that decides to run after he realizes that he might be losing it. A thief might just go into stealth and the next time you see him, hes just a small fading memory on the horizon.
Abaddon’s Mouth (DE)
I main ele for roaming and I run dagger/warhorn.
My builds are listed here: http://asphyxia.tv/builds – check out the WvW roaming elementalist one.