I didn't find the Thermal Assistant helpful.
Instead I zoom to 1 mile radius and keep
an eye on the vario breadcrumb trail.

This also works nice in localised wave
with the advantage that wave tends to
stay put more than thermals when the
wind is blowing.

The Air Glide S shows instantaneous wind
really nicely. It would be great if it sent
wind to the Oudie so you could see wind
vectors on the Oudie track, but it looks like
you have to buy an Air Glide M or L (and
do major panel re-engineering to get it in).