Ed, the Dinghy-tow website has pretty poor installation photos. I even emailed them asking for some better quality shots so I could get a better idea of how it works but the fella there claimed he didn't have any more photos. That seemed odd to me. It makes me think it would be a pretty easy thing to fabricate on your own and they're trying to keep the images vague for that reason.
Witz, I would think the lateral forces under most "normal" conditions would not be a big deal but it would depend on where you sail. Our typical cruising is wind speed 5-15kt and perhaps a 2' chop. I don't think this system would supersede pulling the dink on deck in large quartering seas. You'd have the same issues with davits.
The thing that appeals to me is that the weight distribution. Our boat squats enough when under power, adding more weight to the stern would only make it worse. The entire weight of the dinghy is not being cantilevered by the stern pulpit. Also, if the thing is designed correctly (again, better installation photos would let us know) removal of this system would be very easy and easy to stow.
Anyway, I'm really not looking at buying this system, I have a new toilet and holding tank to install this spring, that will eat up my boating bucks kitty for this year. I just wanted to get any feedback ya'll might have on this.