Lots of good advice above. Hopefully here's a little more:
1. Wider is better. Modify your exit arch so that your arms and legs are as wide as possible side-to-side. Tandems rarely flip, but often roll.
2. If you've rolled past the 60 degree point and are still going, you're not going to stop it on this pass. Barrel roll through the roll, and stop it on the next pass.
3. Don't be in a panic to get the drogue out the instant you clear the plane; sooner is better than later, but get solidly stable first.
4. Don't outfight them, outfly them. I've never tried to force a student into an arch, and haven't had to throw the drogue to get stable since I was a newbie, and didn't know the stuff above.
5. Limit yourself to two or three Tandems a day for the first fifty jumps or so. It's like packing: at first it's strenuous because you're doing things inefficiently, but with practice, without even realizing it, you become more efficient, so the same end result is achieved with much less effort.
6. Every student is different, and the same behavior can have different causes. A student may be talkative because thay're always talkative, or because they're nervous. Liikewise with the quiet ones. Try to adjust your approach to the student.
7. Keep a barf bag in your jumpsuit or QUICKLY accessible on the plane.
8. I always let my students "help" with the canopy flying and landing. I've sometimes regretted it, but I figure it's part of the whole teaching experience. Besides, if the landing isn't too good, they'll probably blame themselves.
9. Learn to do a good slide-in landing. They're not as elegant as a good standup, but they're a LOT more elegant (and safer) than a bad standup.
10. Get large cordura patches on your jumpsuit knees and butt, and add some padding inside the knees.
11. In cold weather, you can put two jumpsuits on slender students to act as extra insulation. (The skinny ones lose body heat faster.) Also, don't forget gloves for the student in cool weather. I've heard plenty of instructors say "They'll be so excited they won't notice the cold.". Not true; just ask the students.
12. On a slide-in landing, don't get your legs under the student. They can get all twisted up and broken down there.
13. Wear a helmet, and have your student do the same. Even if you don't bump into anything, it protects your chin, helps hold goggles in place (especially over-the-glasses goggles), and keeps their hair under control.
14. Every landing approach is different, since each student has a different weight. Set up for final approach fairly high, then S-turn or sashay to lose any extra altitude.
15. Land safe, not close. The worst landing I've ever made was my fault, but was contributed to by the other T-Is making fun of my not wanting to land too close to the tarmac. Throw in a 180-degree wind change on final approach and a newbie at the controls, and it wasn't pretty. Don't let ANYONE push you into something you're not comfortable with.
16. Have fun and don't let them work you so hard that you get burned out. If you feel that coming on, take a break, even if you have to take a weekend off and jump at another DZ.
Gary
AFF-I, T-I (1100 Vector Tandem jumps)
"Extraordinary claims require extraordinary evidence." - Carl Sagan
