Hey HaveFun, great to see you back on the forum again. No doubt you have been on some sort of hiatus, from what only thee would know.

Mate I reckon a hard dodger exactly the same shape as the one in your photo makes those North Shore 33s near perfect, cruising or racing, for a yacht in that size category. Looks very smart too.
If I may, I am giving you a couple of suggestions you may consider worthy of consideration. Great thing that consideration. I have found that with most things, if you give it 90% of that and 10% work, it usually comes out pretty good,
From what you have said it seems there is not yet a mould for that dodger. A good glasser with the measurements should be capable of making a plug for the mould in an afternoon and charge you no more than $300, I would expect less but Sydney prices seem to be higher than Bundaberg prices. Maybe "the good galsser ??" could build the mould for $1,000 or less.
Putting the economics aside, here are my considered suggestions from a trades and maintenance point of view.
If there was a mould, I would have a fairly light moulding taken from it. When I say light I mean light. As we all know, every ounce of unnecessary weight on a boat slows it down and every ounce of weight added above the centre of gravity raises it and makes the boat less stable, uhmm, usually.
For this application of the material I think 4 to 6 mm solid fibreglass would be highly durable aesthetically pleasing and economically satisfactory as the first piece of the puzzle.
This skin is then bolted and screwed to it's stainless steel, highly polished tubular backing frame which has previously been bolted to the boat. If the skin is made with a flange strip on it's front edge, it can be sealed/glued and screwed onto the cabin top. The hidden benefit is the whole lot can be fairly easily removed if later owners do not want it.
Just a note here about putting the traveller on top of the dodger. It should have a strong backing frame under it to the deck level and not just rely on the roof of the dodger to carry the load.
That is my two bob's worth but whichever way you do it, I am sure you are going to do it in a well considered fashion.

Cheers.