umm ... My previous post was about Interactive Brokers, not IG. I trade grain, and other, futures through Interactive Brokers. Google them. They have an electronic platform through which you place your orders, including your stop orders. As I said, there are other brokers, but IB's trading platform, their API, and their Australian Dollar reporting and account basis suits me.
If you want to pay for a full service broker, there are plenty out there, have a look at
this ASX page, right at the bottom,
Find a Broker.
There is no such thing as a guaranteed stop if you are trading futures direct, no matter which broker you trade with. A broker will take your stop order, but if the market is limit up or down, your order will most likely not be filled. This happens rarely, but it does happen. Regardless, there will usually be slippage associated with stops. For CFDs, on the other hand, you aren't actually trading with another trader, you are actually placing a bet with a dealer. You get the price they offer at any time. Some of those dealers may offer a guaranteed stop, but you pay a price for that service.
KH