how i got the adventure done: First of all, use a thief daredevil, use the middle trait at the end that gives you swiftness and constant dodge in water, Secondly TAP the space bar when on your skimmer but do not hold it, that shaman has confirmed you gain a 6% speed boost if you do this, with these tips.... I managed to nearly get gold without the skimmer dive ability, i hope this helps. I heard the swim speed infusions can help too but i wasn't going to go out my way to spend gold or grind to get a high swim infusion.