Using weights would probably give future versions some stability, but in my mind it wouldn't be worth it. Having to carry the weights around would make it less portable, and producing sand is not something you can always do either. Cracking a whip in a park looks crazy enough without me busting out my E-tool and digging a hole
That, and I don't think we're talking about much force even with wraps. It's probably more than enough to anchor the stand so that it won't move sideways, as engineering-wise that's actually a pretty nice structure on its own if you really think about it and draw lines in your mind how energy would transfer from the top to the base. I'll still go with the light weight and the spikes for the base.
But that's all for a more advanced version of the same, made from aluminium. I'll most likely not even anchor this PVC one to the ground as it would serve very little purpose. There's a one metre long piece of 20mm plastic pipe stuck upright in the base after all, and that flexes a whole lot. So anchoring and weights wouldn't make it stable in any case. The more stable one will have to be metal -- or carbon fiber if I'd suddenly start pooping money -- with some triangle structures and other enginerdy stuff. Already got some ideas.