Being an impoverished (read mean) Brit. I've always been horrified at the cost of Hyde-type mounts---but accept that they are essential for four strokes. The running costs of the 30% nitro fuels, at around 20 oz per flight, means that I have stayed with 2 strokes.
My soft mount for the OS 160 consists of four medium-hardness (50-60 Shure) rubber isolation bobbins, 20mmdia.,15mm front to back.
They come with M6 studs bonded to front and rear.
I have these bolted through the firewall, and into the mounting holes that come on the simple aluminium T -beam engine mount that I use. The spacing is 25mm up and down from the Centre-line(as dictated by the holes in the ali. beams), and around60 mm apart side-to side, as dictated by the OS crankcase/mounting lug dimensions.
This provides more than adequate vibration damping/noise "softening" for a 2 stroke.
Better resistance to torsional movement can be had by mounting the bobbins further apart, on an ali or C/F plate, and then bolting this in turn to the beam mounts.
With previous 2 strokes ,I used a similar system with the bobbins bolted to a plate attached to the engine backplate, but 2 broken crankshafts showed that that method is not wise with the OS 160!