The Golden Mule is our favorite. Take one skittish mule (bolts at the sound of gunfire), load it up w/ bags of gold from where ever (mine, bank, Union payroll), set him in the middle of your terrain, and set your gangs at 'em! First one off their table edge w/ said mule and/or gold wins.
Yes, you can shoot the mule. Now drag a hundred pounds of gold off that table!!