Get the 8 inch ones I think they are 20 or 24 inches long and if any of you older ones are Taylor made take them to west marine and replace them under the life time warranty if they don't hold air and make sure it's west marine you go to not an independent
Normally called fenders, rather than
defenders...
West Marine changed their policy. if you didnt buy them there, they wont warranty them. but.... if they look old and "you bought them from west marine 15years ago", they have no way of checking the dates.... so get the wording right when you talk to them.
I had to send mine to taylor for replacement... I paid the shipping to get the fenders to taylor, and they paid to ship me new ones.
the fenders either have to be leaking, or have sun or stress cracks in them... any damage by abuse, other than bursting, is rejected. no cuts or line burns or rips/tears by dock hardware... old, stained and dirty is not a warranty thing.... (luckily for me, or my wife would try to trade
me in

)
taylor pt# 1023 is 6.5"X 23" and pt# 1028 is 8.5" x 27" either size will work for your boat, but for rougher conditions, get the larger ones. a minimum of three fenders should be used.