[macojoe]

Just take some Starboard and cut out two mounting blocks the size and angle you need. ( might be able to get some scrap stock of 1" from a boat yard?)Then pre drill the holes you need and then mount all at the same time with some 5200 sealeant. make sure that you use something strong for a backing plate on the inside of the transom!!!
Some nice 1/4 inch alumin would be good if you can get some??
Let us no how you make out.

Good Luck!

I did the search and I also found nothing on mounting a ladder. But did find other things.

You did the right thing!! Your search proved fruitless so ask!! At least you tryed!

Don't mind Seakindly, he is the grumpy one on the board!! *;D