Useful for anyone who will go for the TCS Achievement when they unlock it.
First off, sneaking through the entire first Island is recomended. I recommend minimum stealth 5 before digsite. Hylea's Bounty food will help with this.
When u depart from Port Maje island buy 400 Water and 400 Hardtrack and sail around the map collecting the insane amount of exp u get for exploring.
I highly recomend u pick beraths blessing for the upgraded sail so that u can outrun anyone who wants to engage