I'm not familiar with Leopards, but I do have a few thoughts for you.
To me, it's unconscionable that builders put through hulls whre they can't be reached in an emergency
. There, that's off my chest.
Can you be certain that the deck
that the head
is sitting on is non-structural? Structural reigidity often comes from a box beam - such that the sole may be the top of that beam, with the hull
as sides and bottom. It could be what keeps the bow from buckling upward. If it's structural, beware. Any patch that you can put in place, a platform for the head
to sit on, will have the be so firmly reinforced and bolted in place that it will be useless in an emergency
If it's not structural, its current
attachment probably will reflect that - it won't be all that difficult to remove. If that's the case, have at it. You could attach the new platform just firmly enough to keep it from falling over or rattling. It could be "quick release."
One other approach. Could you relocate the valves at the top of really high quality plumbing
, such that they are in reach, with the understanding that whatever it is that fails, it won't be the pipe extensions?