I'm in Windermere. My Seahawk, "Feckless", is on a mooring on the lake. I've had it about a year and am sorting various simple issues.
The latest is the rudder. I have made a straighter and deeper rudder to overcome stalling and rounding up. It's also much better balanced. See the vids below.
Before with old rudderAfter with new rudderThe new blade was one I made and fitted to a Prelude for a few weeks, which explains the lighter patch at the top.