I used a spiderflex, and a couple other noseless saddles after prostate surgery last year. They work, they keep pressure off your parts, BUT until you ride a noseless saddle you don't realize how much of a bikes stability is gained from you gripping the nose of the saddle with your thighs. Riding no hands was out of the question with noseless saddles for me, and I had to be very careful riding with one hand ( like when taking a drink). Also, I suspect the noseless saddles put a little more pressure on the knees. Try lots of different saddles and adjustments before going to a noseless saddle. They should be a last resort.