new speaker placement help
 

good day all,

im looking at adding two speakers somewhere so the sound will project out the back of the boat, so when your floating down the river, you can hear music. i don't have a wake tower and don't want to add one. i was thinking of drilling 2 - 6/1/2 holes about the swim deck, but not sure how i feel about that yet. putting one of the starboard side where the old deck shower was would be no big deal, but the portside /left speaker would be right thru the fiber glass any ideas?