If you have 3+ enemies on you start trying to pass around 50%. With the plethora of stuns you will often be hardpressed to get the pass off before they burn you down, that is speaking as a tank with a couple pieces of PVP gear so you may want to adjust accordingly for your toon. It also depends on your group and how much they actually support the ballcarrier with healing and stunning/killing the other team. Also figure out what is a wasted pass (receiver wise) and what isn't. Even if you queue solo for the most part you learn who the good players are on your server and who you can trust. You will also learn who immediately runs off a ledge into the pit or towards their own goal and other stupid stuff, some people are also good players they just don't want to run the ball for whatever reasons. Also actually use the chat, the one thing every fail group I am unfortunate to draw has in common is they don't communicate even basically.