I spent a while on ATVs web site looking for a stronger pole for my aerial. Loads of info. And a well laid-out site.
Having ordered what I thought was correct... They rang to check that I had a second bracket (not ordered as I had one) as they recommend a 2-bracket install for my chosen pole. We had quite a chat during which they gave me additional advice on siting the brackets.
A professional service then, not just selling me what I thought I wanted,. Well done!