I used to hang glide in my uni days. It was a total buzz and one of the best things I have ever done - even better than kiting!


. Two seasons of Polo was close, but that is another story.
There is a big difference between HG's and PG's (we used to call PG's Jellyfish). As you can imagine the HG is much faster, more maneuverable and needs a lot more skill to fly it successfully. The glide ratio is much better - ie more efficient, and consequently you can travel enormous distances cross country using thermals. It is also harder to fly, harder to launch, harder to land, and needs more room than a PG. I would also consider it riskier due to this and the fact you are prone (head first). I have seen a guy killed and used to fly with a paraplegic girl (yes did it HGíng, but she just got a set of wheels to launch and land).
The biggest thing about a HG is that it is probably the closest thing to flying you will ever do. Sitting in a chair hanging about just doesn't count in the "flying like a bird" or Superman stakes. Cross country flying going from thermal to thermal is one of the most challenging and exhilarating activities ever. I will never forget the feeling of thinking "thats it I am bombing out" and looking for a place to land, when you feel a jolt and the vario starts screaming with a 5m/sec uplift. The adrenaline kicks in, you try guess what part of the thermal you are in (or maybe are now spat out of) and crank it over at 60deg to come back into it and back up into clear sky again. Guys were doing 200-300km in day, from Beachmont (back of Gold Coast) to Dalby. I heard a guy got to Chinchilla last year (over 300km).
The biggest downside with HGíng is that is takes time and effort and you need to keep up your hours and fitness (it is hard work, like continually doing pushups). It is not a once every few months sport. It is an every weekend thing. I kept my glider for 5 years after my last fly hoping I would find the time to get back into it. For safety I knew I would have to start back at the basics and work my up and I just never got there.
PG's are great for ridge lift situations (coastal cliffs etc) or a quick jump off a mountain. They are easier and more versatile to launch/land and travel with. They are easier to learn on and much less dangerous. This is why they are so popular - time and ease. They can of course travel cross country and fly thermals etc, but not as well as a HG. HG's can tow too - some of the best flights I had were out in the flat, blacksoil country (thermal's lined up like streets) and towed up to 1000ft off the back of a kingswood at a country airstrip.
If you have the time to spend on the sport do HGíng, IMO it kills PGíng in all aspects apart from ease (of everything). But don't expect to have any other life...... If you are looking for something fun to do that is pretty close, and a lot easier to get into then go PG'ing. Also if there is not much in your area other than ridge lift then also go PGíng. The key to HG is being able to go cross country.
All my opinion only - and admittedly I am out of touch by 10 years, but I doubt the basics have changed, just the safety and efficiency.