The boat position hasn't changed unfortunately. I did escape the marina this morning for a nice motor down the river towards the main channel but a familiar buzz broke my stride and confirmed that I haven't solved the overheating problem. I thought briefly about sailing through indonesia with no engine but dismissed the idea quickly (I didn't have much time to think else the tide was going to leaveme stranded on a muddy creek). So back to the marina for a re-think and probably some professional advice. The recommended local mechanic is very busy but said he could come and have a look on sunday.