Has anyone tried adding a strap to tie the upper of your boot with the highback?

Feels stupid and I don't have a proper strap anywhere near to try it myself, so decided to ask first. I always feel like I could use a little more stiffness, maybe I'm just heavy idk, definitely not a hyper skilled rider. I assume at that point people just try hard boots, but they're not available where I live unfortunately and I'm definitely not buying those online.