In reply to MGT:
Thanks, and thanks to others for their comments.
Thinking about it, the ability to float better on mud would be much better than now since it would be more on level sections where ultimate grip is not necessary. Also, any real mud plugging is only limited short sections of where I go anyway and the big plus of extra places and terrain a fat bike could take me is very appealing.
It’s just a case now of deciding if I can justify all the costs for a limited number of days it would be used per year. I have little doubt it will be a fun ride when conditions suit !
Cheers all, appreciate your comments.