In my last 2 Boats, I put flushmount aimable tweeters near the front 2 bolsters. Lets you hear the radio over the wind and motor noise, as well as on the dock. i have my subs and 6.5's running off the amps, but left the tweeters running off the radio un-amped with a crossover. You don't want them amped or they will scream at you. Infinity makes a decent set. Here is a pic of the port side in my old boat.