All

I have just installed a 1/2 wave G5RV dipole at approx. 30 ft above
ground. My shack is in the back of the house but on the second floor
(effectively in the roof of the house) above the garden but due to the
house design i think i would struggle to have a RF ground wire of less
than 30-40 feet.

Based on above discussions should I :

1) fit a ground rod and run this up to the shack even though its a
long way up along various walls

2) buy an articial ground unit such as the MFJ-931

3) forget about it and make do without a ground.

I am pretty thoroughly confused.

Thanks

Andy