Thanks for the star man, i will add it to the collection. lol.

I think you can gain the same information from a 1/2 pot bet. Any lower and his raise will be masked by steals etc from him raising for other reasons (not just for value).

2/3 and above you are still building the pot very quickly.

With the turn, and your low flush, you are aiming to get to showdown with out the all-in. If you manage to do this you have succeeded in my books.