Gage just turned three. For most of his early training geographical circumstances forced us to work mostly on handling. Consequently his blind work was excellent though he lacked marking experience. Recently, with some creative trespassing we found a way to switch focus to multiple marks training.
After a recent session on marks I decided to give him a couple of cold blinds. He stopped sharply on a single whistle blast and squared himself to me as usual but then he interpreted a straight right "back" as a 45 degree right back. A quick whistle and again a perfect sit. On left back he went 45 degrees left. On another right back he again went 45 degrees right.
After three days (six sessions) of back to basics he is coming around. He starts each session with the "wrong" interpretation of my signal but within a couple of call backs and repeated casts he gets it. I am only using attrition, no pressure mainly because he thinks he's doing it right and not ignoring my command and once the straight back is solid again I will have to start on the 45 degree casts.
I guess training and reinforcement drills never stop.