I do most of my guiding on the chalkstreams and the trout tend to be fairly big. Also, many of the clients are not that experienced so a larger net enables me to complete a netting job more effectively. It doesn't do to lose one at the net rim!
I half expected it was the small trout I catch! Makes sense. I've had the McLean for so long that using it is second nature (and it's as robust as hell) - However, I obviously need to fish chalkstreams with larger trout more often, this bucket list is getting really long.