Correction for those playing along at home: remove the -F from above. That was a cut/paste error on my part. Corrected version should be: ssh user@hostname

Correction for those playing along at home: remove the -F from above. That was a cut/paste error on my part. Corrected version should be: ssh user@hostname -Ct 'sh -l -c "exec tmux -CC -u new-session -AD -s remote"'