I am told that the hull moulding is the same for the 8m and the 9m but having sailed on both the 9M seems to have more bridgedeck clearance, unless my 8M is excessively overloaded, which is a possibility.
I am also told that the 8M is slightly faster than the 9M but I am also unsure about that.
Any ideas on the performance or structural differences between the two model would be interesting in these dull/lockdown times?