Keep the saddle horizontal. (It was every so slightly tipped back, so I made it perfectly horizontal today)
Use a saddle with a cut out for rather premium. (Tick!)
Sit bones distance measured? (Not yet, but I have Spesh dealer not too far away)
Seat post too high? (I don’t think so, but I’ll drop it a little and see how it goes)
Bars too low? (I don’t think so – stem not slammed)
Weak midsection? (Probably!)
Adjust your ride position? (By playing with stem length? Will give other points a go first)
Stiff saddles so no flexing under weight.
Thin gel without padding so you don’t sink. (Yeah, stiffish saddle).
Lots to play with here – thanks.
@glupton1976 – yup, happy to stand, hover and also tend to have weight distributed across the bike.