fitting a new rudder to yak

Hi all,,,

I'm planning on having a good year with my yak but I really feel I need a rudder dealing with the Atlantic sea lumps etc

I'm an owner to an Trident 13 and have enjoyed the few times I got out on her.

I'm looking in the UK at prices around 155 sterling

Is there anywhere in Ireland I can pick one up also I'm dreading fitting it as I might make a balls of it,,any one or where in the west I could get help,,,

Any help will be appreciated

Cheers Brian