I have a mini Hawk stick
(original 3 step cut down to 2) with an HSP on top that I got super cheap. Some others have mentioned swapping the pins for grade 8 bolts, but I suggest taking it one step further.
Even with the bolts installed and tightened, I had more front to back flex than I was happy with, so I drilled a 3rd hole and added another bolt:
There's still a little bit of flex, but it is notably better with the 3rd bolt installed. I DIYed this setup for long walks and short sits. It is super light, and rides nice lashed to my pack:
The area between the standoffs is the perfect size for lashing my outer coat when walking.
I wouldn't recommend the HSP for all day or really long sits, but for short sits, it's "good enough". I use it on days I know I'll sit for a few hours in the morning, then spend the rest of the day still hunting or participating in mini drives.
It is light enough, once I strap it on my pack and lash it down tight, I forget it is there. Then if I find myself in the middle of a drive, I can pop it on the tree and be up around 12-15' in two quick moves. Just high enough for a better view above the brush, out of the deer's immediate view, and hopefully out of the Fudd crossfire.