1st boss in SV i use to stand at maxrange stomp totems + earth eles pop bloodlust and then i nuke as hard as i can on her (dont care about adds) ,when she cast the cloud i just run through it and turn around and dps the last bit of her...
i have all my EM + trinkets in my CL macro so 1st i shoot 1 LB and then trinket+EM+CL and continue to spam LB untill shes dead.

2nd boss i stand at max range stomp my fire totems (since he doesnt hurt much) and just pop BL LB EM+CL and after that its just a LB spam.

3rd boss is like the first just watch for spellreflect (spellreflect is perfect for a chain heal since i use to get shorter aggro from him and get hit on some char)
tho on this boss i use to use 2X bloodlust because of tanks and spellreflect.

hope it helps.

1 thing ive noticed is that when i first got my battlemaster trinket i thought the use effect were kinda sucky since i'd pref dmg BUT the HP buff have saved me wery many times from being killed IE on sethekk 1st boss sometimes all adds hit on 1 char and you'd need to cast a heal but with the trinket it have never happened.

/stick