Is this where we are talking about?
We have taken the kiddies skiing behind the boat in a seabreeze in the next bay downstream and the wind has been non-existent because of The Mount Henry Peninsula.
The turbulence downwind from this Peninsula alone would make your kite fly badly.
On top of this there are probably more things in the landscape upwind that would affect the quality of the breeze in Waterford.
Compared to sailing, kiting in gusty conditions is hard work. It's no worries to wait 10 seconds for the next gust while sailing. Whereas the kite has to always be in the air and requires consistent wind.
A stronger wind won't solve the problem either. It produces more turbulence further downwind. ie even more gusts.