i haven't done it yet, but my thoughts were as follows:
there are rubber bumpstops at each corner of the hood. they are inserted into the inner surface of a boxed member under the hood:
there ...
not there ...
when closed, it rests against:
it would be easy enough to remove the bump stop, mount the post where the bumpstop rests (there is good access on the underside of that spot) and get the post to pass through the opening left by the removal of the bumpstop. then all you have to do is cut the hood for the aerocatch. if you still want some bumpstop action, just put a rubber sleeve around the post.