You skinny guys won't have this problem but when you weigh 95+ you are normally riding bigger kites. Everyone one knows that bigger kites turn slower for the simply fact they are wider. (It's the same reason you bunch into a ball when doing a summersault. You’re the same weight, but turn faster). Years ago I have seen the foil kite stacked on top of each other a bit like a bi-plane wing. I suppose they were doing it to get more lift/hang time.

Has anyone tried it with bow kites? Say 2 x 8m = A kite that has the lift of a 16m kite but turns like an 8m kite. (Dream on)

Now here is the tricky bit and this comes straight from the calculations used for determining the lift on aeroplane wings. Most people know about the air is travelling faster on the outside of the kite than the inside and this is how we get lift. What the fast moving air does when it meet the slow moving air as it comes off the trailing edge of the kite is create a vortex. Normally called the “Starting Vortex”. This rotating vortex causes air to move in a circular motion around the whole of the kite.

Sailors make use of this phenomenon by putting up a jib and a mainsail. This body of air circulating around each of the sail hits head on in the slot between the main sail and the jib forcing the outer body of air circulating around the main sail to go around the front of the jib. The whole effect of having more air moving over the outside of the jib and the air slowed down on the inside of the jib causes a performance improvement of the jib of up to 50% nathe the expense of the main sail. (Maybe that's why they now make the jibs bigger and the main sails smaller)

So with this in mind maybe the best combination for doubling up bow kites would be to have 6m tuck under the 8m and set back a bit on the same lines.

Wish I had some small kites to try it out. I could have it all wrong but it would be good to get some feed back from the kite manufactures or someone who has tried it.