Hi John,
It is possible to have a very solid stand, and unlike HoughMade, I haven't shared his success with the "vintage" type of stand. All but one of my vintage Whizzers [8] employ the earlier Whizzer rear wheel stand, and sadly everyone of them have fallen over at least once when parked. If the bolts are tight, the correct washers & spacers are used the "center" stand will hold the bike far better. An easy way to upgrade the stand so that it holds the rear wheel off the ground is to weld 2 strips of metal across the front of the stand where the stand normally resides when in the down position. The object is to weld the pieces of metal so that they don't allow the stand to extend as far when in use. It would be like placing something in the stand not allowing it to open completely, therefore raising the bike slightly higher and causing the weight to shift forward [lifting the rear wheel off the ground]. Hope this information helps.........
Have fun,
Whizzer OuterBanks LTD
A North Carolina Corporation
Quenton