On the first one, I stippled it because of the large amount of solid back ground. Didn't think a grid would do it justice. The second picture is one I am just finishing up. I used stitch in the ditch with a grid, because of all of the blocks. Stippling would not have helped with the design. 3rd quilt (next project) I will use FMQ and simply let it flow through the design mimicking the waves.
I hope that helps you with the examples.
Through the Window Stippled
[ATTACH=CONFIG]177517[/ATTACH]
Using "ditch/grid"
[ATTACH=CONFIG]177521[/ATTACH]
FMQ using waves
[ATTACH=CONFIG]177527[/ATTACH]