I've used those before. I
try and stake as early as I can... but in reality I usually forget.
I have some figure of eight loops which seem to come on NoID phals, but I've never seen to buy. They hold even tiny spikes loosely enough to grow, but firmly enough to train them well.
I've found a picture (I thought I had posted it before and can't think why else I would have had a picture of it on Picasa).
The small end is tight against the stake, the slightly larger end just loops over the spike. Even small spikes can be held gently and grow freely.
Really wish I could find where to buy them.