Here’s a pattern that has been producing well for me this summer while river smallmouth fishing. It has a thin & very castable light profile, it splashes, gurgles and leaves a bubble trail if you pop it.
Here is another foam diver/wiggler that you can tie as either a shrimp (pink, tan, brown, etc . . .) for salt or as a crawfish (brown, red, green, etc . . . ) for fresh – it’s half Tullis Wiggle Bug and half Popovic’s Ultra Shrimp.