If we're adding to E's list add in one or two speedie sleeves and installer (piece of pipe or tubing work) to salvage the spindles in the area the oil seal rides.
Hi Eric, nice challenge. First off I've never tried casting anchor straps but can certainly see where the extremely high ductility requirement would be hard to achieve for a home caster. Purity and grain structure are going to be critical.
Purity, Unless you're purchasing lab certified pure...
I've decked over three different V & semi-V 14 -ft aluminum boats using wood, welded aluminum & solid rivet aluminum decks. No John boats - I'm not sure if they have enough free-board to be worth it. Photos to stimulate ideas and discussions.
60's wolverine w/ wood deck:
Starcraft...