River City Sand & Gravel

[Rvjimd]

Guys,

I'm thinking about some sort of unloading facility for my Sand barges. My first thought is some sort of traveling gantry crane with a clamshell bucket on it. I have a nice clam for my crawler nylint crane. I like using it, but it is VERY tedious and requires ultimate attention to the hoist and closer controls otherwise you end up slacking or opening the clam. So, are there other options for the closing mechanism? I don't want to do a hydraulic system like I have seen, and I don't know what else might work?

Thoughts?

Jim