The boat came with the engine when I bought it. Very smooth little engine, it weighs 35kgs so easily manageable.
The kids were near the end of the 'happy period' so didn't get to open it up. I think it'll just plane and not much more.
I was after the Twatsoo 25 that Peter has for sale, we'll see if that comes off.
Will be keeping this Yammie as a pottering engine, its just so smooth and almost silent.
As my 6 year old said as she throttled back "daddy its stopped" ! Just so quiet on tick over