Fluctuating water level in my pond would be a huge issue. I like your idea of the drums sawn sawed sawified cut in half with the ropes tied to them. Great idea Layton!

JHAP
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"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)