I can feel your pain...a good boat seat can make all the diference.
I did some extensive searching on your behalf...and it looks as if West Marine Store are all over your area. They appear to have the best selection of all kinds of quality seats.
Here's trhere link on the
www...
http://www.westmarine.com/
Just 'browse categories' to 'boat seats' and look at there selections. These should be IN STOCK so you can sit a spell in each before you buy.
Personnally, i liked the Attwood Centric Chair...
Hope this helps...best of luck and fishing