I've been sailing twin trap boats (or trap single handers) so long, I have had to thing very carefully about what I actually do !

Going out

1, Trim the sail in as hard as I can while still maintaining heading
2, Hook on (mainsheet transferred to Rear hand); and tiller under my arm
3, Butt over the side, lift my body weight with front hand (I trap fairly low as I sail on a lake) and in one movement get both feet on the side deck, grab mainsheet into front hand and start steering.

Going in

1, Helm over
2, Forward hand passes mainsheet to rear hand
3, Want till but is just getting wet
4, Take weight up using front hand and swing in, as but hits the tramp flick trap off and grab (now eased) mainsheet in front hand
5, Tiller around the back of the mainsheet and swap hands with the rope
6, Go out as above