Swimming upstream/against currents

Hey folk, Came into the Stars and Stripes Aquathlon a little rusty in open water skills, I admit (don't live near open water, but down the street from a pool, so you do whatcha gotta do). Lots of fun, great organization, beautiful setting--no regrets, despite my VERY slow swim. (My run was a bit on the slow side too, but at least was not too far off my normal pace, if you don't include the transition time.) My very slow swim, in fact, isn't even a bad thing: I just regard it as a reminder of a skill to improve on, namely swimming against a current. By NYC river standards, the current wasn't even that intense (or I'd be in "endless pool mode" to this very day, lol). The web site mentioned that at its max the current in the Harlem River tended not to be more than 1 knot per hour at its max. I don't know what the speed was the day of the swim, but my speed... well, see above. The course involved swimming parallel to the shore 600m, then swimming across the current to the next buoy (can't remember that distance), while the kayakers urged me to aim to the right as the current was pushing me to the left. Got to the much-sought-after buoy that marked the start of my return trip, and it seemed like NO time at all that it was time to once again cross the current enroute to reaching the shore. Because I was planning to run, I thought it best not to start too fast, so my opening effort in the swim was about what I use to warm-up for swim workouts. My goal was to keep more or less within myself until further along. All very nice. Once past the start and heading along the course, I was having a lovely time--water temp was cool but reasonably so, sun was out, and I was swimming in a whole new setting and thinking how cool it was to be there. But after a while, it occurred to me that it was taking quite a while to swim 600 m. and that even though that was longer than 600 yards, it wasn't THAT much longer. Eventually, I spotted the turn-around, but it seemed as if I was swimming in place, until I finally (as described above) made the turn and headed back. Okay, one lesson: if heading out against the current, I can't really treat that part as a warm-up. BUT I'm looking also for suggestions on handling opposing currents in races. Not looking for Olympic glory (in my dreams!), but would like to be at least somewhat closer to my pool speed--okay, within waving distance of my pool speed (which, btw, isn't impressive). The good aspect of this is that at NO time did I feel panicked or anxious. I don't swim fast, but I do feel comfortable enough in open water that I'm not spooked by stuff that might spook less experienced swimmers. (Only felt a bit nervous when power boats seemed a little closer than I'd have liked, but the guys in the kayaks assured me I didn't need to worry about the power boats, and, in any case, I figured the best response was just to keep swimming, since worrying wouldn't get me to shore.) Altogether, would do this swim/run again--but become better at the "against-the-current" part: hence, this post. Thanks for any suggestions (oh, and feel free to include brickbats and accolades!). :)