Here is the long exposure that I was trying for a few days back. What a difference a 1000X ND filter makes ;-)

This is at noon in bright sunlight and I am able to get a 30 second exposure at ISO 100 & f/16.

It was very windy, but the tripod seems to have held up pretty good.

I like the tones in the water and the fact that there are still reflections off the water, even after 30 seconds of waves.