I tie mine down, BUT, I do not put ANY downward pressure on the awning at all .... it is there to keep it from flying away ....
When I tied down the manual awnin on the other trailer, I would make the tie down straps a tad tight, not much but it exerted some pressure to the awning.
The electric awning seems to be flimsier compared to the manual one.
2009 Ford F-150 XLT/XTR 5.4l, CrewCab. long bed
2011 Surveyor SV-291