Jixxer...keep it simple. Let the pond mix it for you. Spread with a feed scoop, shovel, or pile it on a piece of plywood on your boat bow, and spray it off with a gas powered pump. There's no need to mix with water, then apply. More surface area contact with pond water, the better. Don't worry about getting it all out at one time. Put out some, put some out later, then do it again. Watch the water, measure visibility...then do it again.