Having broke a short seat post due to flex in the top of the seat box and having a partner who has a dodgy back, I went hunting for suspension seating, and ended up at Marinetech. I purchased two of their box top suspension pedestals, and have installed the first, after grassing some braces across the offending flexible panel of glass.
First test this weekend just gone, took a 100 Kmh detour chasing bft to end up with a feed of flathead, and the wench disembarked with a smile on her face. Her comment, takes the "jar" out of the odd pothole, and that her back felt much better than normal. We travelled 50k's east to not turn a reel, and it was a bit sloppy on the way back.
1st impressions are good, and at around 300 permside plus fitting, appears to be a reasonable proposition based on the feedback from the tester. Height adjustable, but lose some shock absorbing capability when lowered.
Will provide feedback in a few months.
Thy