Buiilding a highbanker Options

[rich on western ...]

I am planning on building a highbanker. I'm setting it up for fine gold only. Wanted to make a boiler box with spray bar all around it. Planning on using a 12v bilge pump instead of a gas pump. Was wondering if it would be powerful enough. Was thinking a 1000 gph pump might do the trick. Can you use the pump directly in the stream or river for areas where it is hard to get proper flow? What sized hose should I use to feed the spray bar? Want to set it up with recirculating water so I can work dry areas. It is going to be 8" wide and 32" long. Going to have a 1/4" grizzly at the end where the bigger gravel will wash off. The sluice part will have a 16" slick plate and 2 8" sections of expanded metal over miner's moss. Going to be based off my DFS but smaller to be more compact. Going to make it so it will fold up for easy transport. Any thoughts would be appreciated. Will post pics once I start putting things together. I just have some ideas on paper right now.