SIR, you need to try the Charlie White Clam Gun!   Get a piece of SS pipe, 8" across adn 16" long, weld an end cap on it.   Put a bar across for you to grab with both ends.   On the end cap, drill a 1/4" hole that you can put your thumb over.  You then push it down over the big horse clam, put your thumb over the 1/4" hole, and pull, suction keeps the sand and usually the clam(s) in the "clam gun".