I like the idea of #40 with the word on an island surrounded by ripples- could you try softening the look and making it more natural- maybe not quite exact oval, softening/fewer ripples and use green for the land- this would obviously mean using a contrasting green for the word 'island'- can you also try a font or style with lowercase 'i' in island so the 'i' and 'l' don't look the same? and capital N for Net?
I really like #69- can you try it with a slightly less thick font for the word Net? and bolder or darker green for 'island'? Also, I'd like to see what it looks like if you cut the underline short on #69 and just have the island swirl ending under the 'i' OR try a single underline rather a double
I also like #66- could you try that without the yellow shoreline, and try some different greens?