AppleBonker
Dag, yo!
Oh, and soon you wont worry about having to target weak portals. Defense is horribly broken in this game. At L6 you can easily take down any portal. No need to target only the weak ones at that point. The only way to defend an L6+ portal is to keep slapping resonators on it as they are destroyed. Sadly, the portal level will still drop if it is attacked long enough. I'm pretty disappointed at how difficult it is to build an L8 portal (and even L7 portals, to a slightly lesser degree) yet they are so easy to destroy. That fact alone has lessened my time playing dramatically.