I posted some advice for THEDUKE a while back when he was learning. To save me typing it all out again i'll fire up the link. I stuck to my thoughts on there and just go for a more height and try and hold a constant (ish) speed through the wheelie. Not really tried to go up the gears again. I wanna be able to hold it smooth, wee twist on the bars and relax enough so i can look the the side or try and take my left hand off and give a thumbs up. Typing that out it feels like it will never happen, but noticed my posts in the thread were in July and it's only 2months on and they've got loads higher and smoother already.
All the wheelies in the pics above were in 1st gear and clutched up. 2nd is way smoother coz your traveling faster. You can see in one of the pics the bike is falling to the side a bit. It will do this sometimes in 1st gear high ones and it kinda wobbles an weaves left to right coz it's not traveling fast enough.
I've moved to 16/40 gearing now, changed to this for the track but it's helped the wheelies too. 1st gear is now pretty sensitive now though. On track i can get more drive out the corners by using a gear higher in some turns than before. On 16/38 the bike was running out of puff a bit at the top of 4th and thats when the 1000cc I4's were getting going. Feels much more alive now without feeling like its short geared. Saying that though, i dont use the bike on the motorway, it's just a wheelie/track slag. I keep it clean/polished and a few times a week i'm checking/adjusting and going over things, so it's well maintained and cared for.
In the 1st two pics, that still isn't nearly flipping, it can go bit higher than that. The balance point isnt a point it's more like a wide "V" shape.
These pics look ok, but dont get me wrong guys i aint no wheelie guru at all. Still got loads to learn. I love this bike and dont wanna crash it either, but in the pics it wasn't near flipping or feeling like i was gonna crash. It's all about air time. You have to spend time gradually building up the height then eventually you'll become relaxed at that height. Kinda like just pushing your comfore zone bit by bit so a wheelie is well within it and your relaxed and in control.