I run a recreational shrimping website. We sell an invention named the Ozello Shrimper. It is a grass flats shrimping device that is a marked improvement on a dip net. It doesn't require cleaning grass out of a net, prevents shrimp from escaping and you don't need to bend over. We also sell the extra stuff that goes along with it to make shrimping easier.
The gear is used in low tidal flow grass flats / estuaries during shrimp migration seasons. The West Coast of Florida goes through one between may and late July and around November each year. Shrimp yields can be considerably high if you go out on the right nights.
Instructions on how to use the equipment along with photos, articles and a lot of other shrimping related information can also be found on our website.
Check it out and let me know if you have any questions. http://www.ozelloshrimper.com/