Marine speaker box?

I ordered some marine speakers and marine radio, and I am looking of a way to enclose them all in one so I can take it in and out of my boat, b/c I am not sure of how long I will have this boat and if I want to jam elsewhere. It is just 2 6.5 speakers. I know I could use an ice chest, but I kinda wanted to make my own. My friend fiberglassed a box for his front rack on his brute force that was pretty cool. Any ideas ? or someone who did this already pictures would be great? Keep in mind it needs to be pretty much water tight.

thanks tyler

 

don't know if you still need help but i am doing the same thing and i am just going to build a box from a product called extira. It is a exterior grade MDF. I plan on doing it like a normal speker box that will fit under my boats back seat, but in the winter time i might put it in the back seat of my truck.

 

try sonic electronix i ordered 6x9 boxes and they were really cheap but i dont know if they have 6.5 boxes