I use a Slik D2 and use it in hides by partially extending 2 legs only (a bipod!) and just slightly apart to give stability. I then rest it against the shelf with its feet on the floor. I don't do enough hide watching to justify a hide clamp and anyway the shelves don't generally seem that rigid and bounce up and down with people putting binos, thermos etc on them.
btw you can remove the centre column from a D2 easily enough if you remove the cap at the bottom. Not sure if its the same on the D3. I removed the handle/ratchet years ago since I don't see that winding the colomn up and down achieves anything stablity wise and just takes longer than sliding it and this may contribute to the ease of column removal.
btw you can remove the centre column from a D2 easily enough if you remove the cap at the bottom. Not sure if its the same on the D3. I removed the handle/ratchet years ago since I don't see that winding the colomn up and down achieves anything stablity wise and just takes longer than sliding it and this may contribute to the ease of column removal.