I'm trying to follow [this tutorial](http://www.cornucopia3d.com/purchase.php?item_id=10189) to make an image where the waves look like they're right up against the camera.  It doesn't look right, and I think it's probably because the default scale is different.  (The tutorial uses Vue 7, I think, while I'm using Vue 10 Infinite.)

The water is created using a Boolean difference (so there's no displacement on the front face of the water cube).  The underwater material is at scale .60, displacement mapping is on, and the bump depth is set to 9.  But I end up with weird artifacts.  The ones on top of the water are probably reflections of the things under the water.  In the tutorial, this was fixed by increasing "turn reflective with angle" (under transparency).  That helps, but doesn't fix the problem entirely.  The dark blotch by the land is probably the land viewed through water, but it's not terribly realistic. There's also those weird diagonal dotted lines - I have no clue what those are. 

What am I doing wrong?