Attached Link: Visit Schnaps' Graffix for free stuff!

I believe this image to be very successful so far, but one major thing bothers me (other people too), the wake around the boat and whales...umm, there is none. Can someone please show me a good technique for making wake around them, not much just enough to show movement. I have tried several things and can't get anything to look right. Someone help! Any other suggestions on how this image could be improved would also be nice, but mainly the wake. Thanx everyone, have a good one! Schnaps