Thanks for the advice. Getting the images crisp is one of the many major problems I seem to be having at the moment.
From what I've read in these forums it's just a matter of practice practice practice. At least it's good fun
I was trying boats last weekend at 1/100 down to 1/40. The added difficulty with boats is that if the water is choppy, they'll bounce, too, which will add undesired motion blur.