I have done a little long lineing in the ocean, before the rules changed and we weren't allowed to do it any more. kind of curious about what you guys use in rivers. i used poly rope and wieghted it every now and then to keep it near the bottom.but you are in realitvly shalow water with traffic.how do you keep your gear from getting fouled by boats and flotsum in a river? do you use a sinking ground line?