I like the way this fly has been renamed by Fulling Mill to the Cuban shrimp from its original name - Veverka's Mantis Shrimp (the guy who writes the Bahamas Bonefish Guide).
Veverka's Mantis Shrimp
I spent most nights tying these up for people when I was at JDR in 2001. Size 6 was best.
I used Orvis dub which has a nice sparkle to it. It also works well tied in cream for sand flats. If you tie the mono eyes slightly angled up the same way as the hook bend it helps flip the fly and swims correctly.
Brewster's Amber is another excellent pattern for Cuba.