A new and sophisticated method of measuring the draft.
I once measured the draft; most marinas ask for it along with insurance details, length, safety certificated and other details.
However, this isn’t much good on the cut. Mooring up in somewhere more permanent, you want to get a decent depth so your not run aground which will cause your boat to sit awkwardly, and may cause damage to the hull.
Seeing as my walk was not far, I measured some of the depths with this new device I have developed.