Was roaming around the area taking a mixture of long exposures & HDR shots and in swapping between the various settings for both had this happy accident.
I used the in-built 3 stop ND + external 10 stop screw-on but forgot that I still had a 3 bracket turned on so it took the middle & the over ok but couldn't do the under as I was already on 30 sec plus f16. However, there was still a difference between the 2 as the sun kept going in & out of the clouds.
Processed the 3 in HDR EFX Pro 2 then again in Color EFX Pro 4 to bring down the sky and bring out some detail. Back in LR adjusted angle, crop & clarity.
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Being a Dutchman, I've never been there. Really must go there once. I like the smoothness of the water, the sky is beautiful, but I find the top right corner a bit distracting.
Long exposure. Good subjects. I might have tried ghost reduction, but I suspect the wind was moving stuff a lot. Maybe you did attempt ghost reduction. The blurred vegetation is a distraction. The long exposure probably required an ND filter to smooth out the water.