My name is known for these Hunter water ballast sailboats and yes I sailed the 260 and 270. In fact I introdcued them.
The diplacement under sail is the same but dry weight for the 260 is 3000 lbs versus 5000 for the 270. 260 easier to tow and get on the trailer but there is a trailer designed to get the 270 out but you will need a longer ramp. Mast raising is the same for both.
The 270 is a little harder to get off if grounded but if you ground, go backwards until you get back into deep water. As for the 260, lift the center board and back out.
The 270 is a little stabler since the fixed keel is deeper as it will not heel as quick as the 260. However, heeling 12-14 degrees max is the same for both. I found both with the same experienced skippers, both the 270 and 260 sail together pretty much the same.
One thread talked about a 9.9 engine. If you tighten the lock friction nut up enough so it will swing, turn it when under way until it is no longer creating drag/friction. Reason is the engine is off to the side and not amidships or in line with the parallel with the length of the boat and will be turned a little to compensate for that.
crazy dave