Guild Wars 2

I put all the traits into explosive and use the bomb kit. Aggro mobs, run (not back-peddle) in a circle and spam 1-4 bombs. Against range mobs just face tank their dmg and drop bombs right next to them.

When I was playing my Norn ranger my bear had no problem holding aggro but when I was on my Sylvari ranger also using bear, mobs often hit me instead. And then I die. Can I drop/transfer aggro or make the pet taunt?
Thanks.