Got two of these set up today, per the photos:
!
Had the carpet dryers positioned either side of the wheel, angled in, and with one ‘upside down’ (actually just rotated 180 degrees): they produce a narrow stream of air, so the idea of the positioning was to create a larger spread of air flow, from knees->face (due to the angles of the exit vents, the ‘upside down’ one creates a lower stream, despite its vent being higher).
I ran them on setting 2, both on the same remote.
Very impressed!
One of these would be hugely more effective than the 12" fan linked to above, and on setting 3 more effective I think than my old 18" floor flan (not shown, but see earlier). The only downside is the narrowness of the air stream created, as it hits a much smaller ‘zone’ of the rider compared to the floor flans, but the air hits with much higher velocity (multiples). If you’re not used to all-over airflow on the turbo, you might not notice this much.
A couple of these carpet dryers together, positioned to give a wider spread (body coverage), works great. The pedestal fan in the photos I’d normally soon have running full blast during a hard workout, but initially was able to leave it off, and then un it at its lowest setting because the carpet dryers were doing such a good job.
When the weather warms up and I want to run the carpet dryers on setting 3, I may stick them on separate remotes to give finer grain control when warming up at the beginning of a workout.
Fans, eh?, gotta love 'em 
HTH.