I need to know the best way to achieve an "all-over" tan!?

Hi! I am a man and would like to know the best way to achieve an "all-over" tan! Firstly, I like to add, that I am thinking of becoming a nudist and going to the local nude beach this coming summer, but was wondering if I was to sun tan with a fully hard penis, would this be better than being soft for an all over nice looking tan, before hitting the beach? Has any of you ever tried sun tanning fully hard, and if so, what is your thoughts and feelings on this, does it work better or not so? Thanks in advance!