I keep castability in mind as well NIB when building. Its second however to the action I have in mind for the plug but if I can achieve great castability and desired action I find it a huge plus naturally. I was quite surprised by my 3 oz. Danny when I made it at how incredibly well it casts as most Dannies I have ever used tumble clumsily......mine goes tail first and the swimming action is great!
Love your posts George!