I have a Radsails 3.6m2 kite and it doesn't seem to have much power at all. I brought it 2nd hand and it doesn't have any instructions. Does anyone have any idea as to how much power it is supposed to have or any tips on getting it flying properly?

Spud,

I suspect you are expecting too much from your kite:D
I have a 3.6m HQ Beamer which doesn't give much pull in lower winds but when it gets to 15-20mph it will really pull me around the beach!
If it is your first kite you need to get good at flying in lowish winds before progressing to the big stuff...
The other explanation might be that your brake lines, the thinner ones, are too tight and depowering the kite before it really gets going. There should be some adjustment either on the handles or where the brake line attach to the bottom of the kite, might be worth trying to make this a bit longer, see if this gives any more pull.
Let us know how you get on

Spud,

Radsails come pre-set from the factory, so unless the previous owner has messed with the line lengths, I think your problem may have more to do with how you are gripping the control handles.

In flight, the bottom part of the handle should be pointing toward the kite and there should be a noticable sag in the brake lines. If you have a firm hold of the grip you are likely pointing it downward causing a depower situation.

Try holding the handles so the power line is running between your first and second fingers. Close these fingers around the handle and cover them with the thumb. This is the pivot point of your grip. When you want to depower or make a break line turn, close your last two fingers around the handle and pivot the wrist downward.

Yesterday I was flying my 3.0m Rad Pro in light winds (10 - 12mph) and had to keep my feet planted in order not to get dragged around.

Hey,

Tried what you said last night and was a great help!

Thanks
Spud