Took the other half out and about on the Speedmaster a week or so ago, despite rear shocks being set fairly soft, she complained that the seat was uncomfortable.
As luck would have it I stumbled accross a "touring seat" for a Speedmaster on E-Bay, it is a genuine Triumph seat but no longer manufactured.
I think I got it for a very good price - £52, stuck it on over the weekend and took it out for the first ride last night.
It is amazing how different it makes the bike feel, it's really comfortable. Not taken the other half out on it yet, but think she will be impressed.
Taking the Speedmaster out for my longest day run today - heading out about 10 AM.