Another vote for polarized (but really unbalanced). My thinking is that against a "very loose very aggressive" opponent on a dry board I don't really want to fold to his bets too much. So my plan is for one of four things to happen in this hand:

a) bet flop with A range, he continues, call and keep calling (or betting if he checks);
b) check behind flop with B range, call turn and river;
c) bet flop with C range, he folds;
d) bet flop with C range, he continues, don't put any more money in (ok maybe sometimes if he surprisingly just calls the flop, checks turn, leads river or something).

Here C is going to be a big majority of my range because it's every hand I don't want to call two bets to see a showdown with (this could include some pairs). Which hands exactly are A/B/C needs more detailed reads, that's the part I find pretty tough.