I use westpac's BT ML and they scaled back to 45%, which is enough for me. I keep a reasonable float just in case. I still have nightmares getting an hand carried message for an urgent $80k margin call a few years back when I was living in a tent in the Gobi Desert.
My BTA holding is split equally between ML, my super fund and my share trading account.
I did use stop losses, but found there to be problems when moderate numbers of shares were dumped during quite times (i.e. during lunch hours) to cause dramatic falls and activate stop losses. Happened a number of times with HDR and SLX.
M
BTA Price at posting:
$3.12 Sentiment: Buy Disclosure: Held