Hi buddy, thanks for your input, to be honest I've got a lot of varying blanks, many, many, tests with the help of vodkaman, one that I'm really liking at the moment is a mixed version of resin and foam that I came up with.
The foam is solid, rigid & tough, so once a top coat is on I would (imagine) it will be hard as nails, but this is why I'm doing all the testing now, as of yet I've not got a through wire in the blanks, I'm first testing with screw eyes & moving the hooks and weight about until I get a bait I'm happy with, my idea then is to make a new mold from the final chosen blank, which will then allow me to include the through wire when I do the new pours!
It's maybe a long way of going round things, but hopefully I will have 100% confidence in the final product.
I will keep an update going on how I get on, it's a little slow at the moment as I have limited time to work on them, but I will get there!
Andy.