Just smoke till your high and then smoke a little more. i do think that taking a shower after u smoke does kinda kill your high, but not if youre stoned enough. You should try taking the biggest hits u can and holding them in as long as possible if you really want to get the highest you possibly can. I find that bongs actually get me higher than bowls or pipes, and i know ur 16 so i wont suggest u buy one, but you should try making a homemade one.