So it sounds like a typical
marine railway where all the weight of the
boat is taken by sitting on its own
keel with the 4 posts providing support to stop it falling over only.If this is correct then any structurally sound
boat should have no problem. Whereas in the US the typical
cradle supports the boat with 4 or 6 pads underneath the hull,in
New Zealand the typical
cradle supports the boat just the same as on a
marine railway as i described above with the entire weight of the boat supported on the
keel,if i had any doubts about my
boats ability to take that kind of load i wouldnt want to get out of the sight of land with it. Years ago we used to clean the bottom by bringing the boat up on a grid at high tide,lean it against 2 pilings as the tide went out sink the
dinghy so we had a
water scource,scrub and
paint it and float of on the next tide all for just the cost of the
paint. You may need blocking under the forefoot if it dosnt have enough keel length to stop it falling foreward but probably not.
Steve.