The problem is centred about 40 feet above the craft, which is a favourite perching forum for albatross etc.
When they launch off to fly away, they clearly release ALL stored ballast in the shape of a huge excrement dump.
They are neighbours very large trees, so my employed tree surgeons refused to go so high!
Luckily my TWO PACK epoxy paint is not damaged and some elbow grease and a few minutes will sort the problem.
I have contacted Tracey at the Argyll camping compound asking if she is again willing to authorise a double width
mowing from the camping area down to the small inlet on the shore of the Loch.
This worked well last year as we were able to thus avoid "upsetting" any one around the boat launching slipway
as various users THERE believed (in error) that we were NOT allowed there!
Avoiding upset is always better IMHO (when possible)