Anyway, Himself decided that the optimum way to put the concrete support post into the water was to build a casson, pump out the water and clear the debris off the bottom of the pond, make a 'pillow' out of pond liner filled with cement, put the pillow on the pond bed in the casson then lower the post down into the casson and onto the pillow before levelling it.
Here's Himself putting the finishing touches to the casson. He angled the edges of all the planks so that they would fit together snugly like a barrel. It was held secure by ropes, then covered in plastic sheeting (I'm sure he had a reason, but heaven only knows what it was!) and made a skirt of pond liner to help weigh it down.
We roped Chris and OJ into helping for the day. Here they are moving the casson to the edge of the pond. If you enlarge the photo you can see a white sausage-shaped bag, held on with yet more rope, going right round the casson as an extra weight. First-Born made it out of an old dustsheet and we filled it with pea gravel.
I spent a lot of time going " couldn't we just .........?", " wouldn't it be easier if .......?" and "what if we just ..........." and being thoroughly ignored, so I let them get on with it in their own sweet (complicated) way!
The casson being lowered into the pond.
Chris then placed the pillow in the bottom of the casson.
The post was carried onto the planks..........
attached to the chain hoist then with Chris being the counter-weight (makes a nice change from it being me!) and OJ providing resistance to stop the post from swinging...........