Sounds like a great outing. You need some seat time in it, and loosing that wind would be a help...lol. But all in due time. Slicks will change things a bit I'd wager. With drag radials you might want to either back into the water and be careful not to spin a lot or fast in it (so it doesn't get up into the wheelwells and drip down in front of the tires), or forgo the water all together. I ususally just try to get them to rotate once slowly, then pull forward and do the real burnout.