To be honest, I actually find it easier to do giants when not strapped in. But I've always liked giants. Here's the pretty much exact steps you'll want to follow to get a good giant:
1) Get a good high cast so that way you can pause at the top and think about your giants
2) When you are moving down, stay in a hollow position. I'd suggest looking at the low bar at this point. Make sure to hollow enough that you don't hit your feet on the low bar.
3) Once your feet pass the low bar you can tap. The later the better.
4) When you tap, don't just open up your hips, open your shoulders to extend the tap to the whole body.
5) Have a good strong tap
6) You should go around rather quickly, and once you are within 10 degrees of handstand I'd shift your hands. On my first giant, I didn't shift at all and didn't make it over. It took me a while to know how to shift without thinking, but after lots of weirdness, it's just a second thought

7) If you hold your handstand, don't worry, hold your hollow, and you should be able to save it.
8) Repeat!
These steps should help you get a good giant down. Just remember, PRACTICE! And don't be afraid of giants! They are very fun and easy to bail out of
Good luck!
-Lauren