Cheers guys for the replies.
I don't tend to be too chatty at all.
I have a 6w Standard Horizon handheld which clips to my person at all times.
The fixed set was just go give a bit more range should the sh@t hit the fan.
I have been a bit more adventurous in my Sib the last two years doing a bit of island hopping and camping around the West coast of Scotland mostly on my own.
I intend to use the set to pass my intentions on to the C.G and shout up when i arrive etc.
Other than that it will be for emergency use only.
The aerial itself is just over 5 ft tall.
I'm going to mount it just above the top of the transom.
Combined height of 7 ft ish.
I'll be around 1.5m from the aerial.
Hope I don't fry my already scattered brain