I made a "swim platform" that can be mounted to the side or stern of the Mac (it's a "prototype" so I have some more work to do on it like, install SS chains to replace the line). The PB is quite stable and if I need height from stepping from the PB to the Mac, I use the adjustable swim platform.

Also see - Stability: http://www.portabote.com/stability.html
As for the banging sound of a dinghy at night (or any time) that would probably drive me nuts (we've always had the PB onshore at night so I haven't had to resolve that nuisance yet). Seems the foam pipe sleaves would do the job... either that or the Mac's fenders).
Regarding surgery for the poor girl with the pink nose... I know, it's a travesty. Unfortunately, I can't help as I have no idea who she is.
TT, thanks for the info about the new oarlocks. It is one of the features that seems to be most-often changed by frequent Portabote owners and I also hate it and intend to make that change. Factory oarlocks are very wimpy.
Portabote folks have a forum very similar to Macgregorsailors. They love their little boats and there are always modifications going on (similar to here). Some, like here, have come up with some great mods.
Duane, I've watched Bob put the PB together (I am usually hanging onto the "kids" while he does it). Not sure why your dad would have so much trouble but anyone who has rigged the Mac for sailing, setting up the mast, etc, would find assembling the PB a piece of cake in comparison. Honestly, it only takes Bob about ten minutes. Bob is pretty sure he can assemble it on the bow of the Mac. I dunno but I will have my camera ready if he ever tries - as well as MOB equipment
I have no idea how the PB compares to an inflatable in gas mileage. It has a 10 year limited warranty (you should see this photo of a PB loaded with 600 lbs of concrete bags being dropped 21 ft http://www.portabote.com/warranty.html ).
For sure it is not the dinghy for everyone. But it works for us. And it's fun to play in aside from its use as a tender.

And this is an accessory I'm really looking forward to:

http://www.portabote.com/sail.htm
jackie m and fuzzy crew


