The forecast locations were never intended to be an exact spot forecast, but rather a generalized area.
the swell data is going to be pretty much the same for OI as Holden, except for those E swells that skip past holden, but sneak into ocean isle.
The small difference will be the conditions based on wind direction, where ocean isle is a little more offshore with a more westerly component to the wind and vice versa for a north wind.
I actually originally had the forecast region labeled South Brunswick, but I forget why I changed it to Holden. OI is a more popular surfing area isn't it ? One thing I could do is add a SSW facing beach forecast for that area.