You could take out a whole page advert in the Somerset County Gazette;
https://www.somersetcountygazette.co.uk/
You could inform a lot of the good burghers of Somerset this way. You could say at the bottom of the page 'Please spread the word within Somerset, by any means that you can - please!).
Of course the main bulk of the page would have to be devoted to your confession. You will also need to sound contrite = otherwise you'll blow your cover, and the people of Somerset will bust you for not being devout ie they will not forgive your sins.
It would appear that there is no demonym (a word that I have only just discovered exists) for Somerset, to my knowledge, so maybe below the confession (and above the plea to spread the word, you could say something like 'Come on Bath City F.C, I know you can do it. Then go onto say that you love Yeovil Town F.C., in fact you love all the Somerset football clubs in Somerset. Some will bust you for not being realistic, but a fraction of those will fail to respond because they like being mistreated. So, I think we're (how did I get into it?) good to go!
Best of ;luck.