A detailed description of the performance of the single skin FS Peak and O3 Explore kites is posted here.
The most important design change for the Ozone Explore v2 (vs v1), is that the wingtips are now also closed cells and minimize fluttering, similar to the Flysurfer Peak kites. The aspect ratio of the Ozone Explore kites is slighty larger than for the Peak 5. Jumping and vertical lift, however is still very much reduced for the Ozone Explore v2 single sheet kite. When it comes to turning and looping uphill, the Ozone single skin kite Explore v2 provides slightly more power than the Flysurfer Peak 4, but this has changed with the new Peak 5. The Flysurfer Peak 5 has significantly improved compared to the Peak 4, as the flutter on the bar is now even more reduced (e.g. almost not existing anymore), and looping uphill provides ample power. The bridle line setup on the Peak 5 remains simpler than on the Ozone Explore v2, which due to the 5th line assembly tends to entangle more easily. Frontstalling with collapsing leading edge under gusty conditions seems to be a slightly bigger issue for the Ozone Explore series than the FS Peak series. The size of single skin kites however has in my opinion probably the largest influence. The new FS Peak series now allows to tune the bridle setup.
We have flown the Ozone Explore V2 (6m2) and the Flysurfer Peak V5 (5m2 and 8m2) up to gusts of 80 km/h (~40kn). They are generally save to fly in gusty winds and can be completely depowered. However there is a cautionary note about flying single skin kites under very gusty conditions. They tend to frontstall in wakes and rotors more easily compared to dual skin ram pressure foils. In these cases the leading edge of a single skin kite can collapse. This happens less likely with conventional ram pressure foils. More details testing front stall is described here.
Single skin vs ram pressure foil for snowkiting?
Here is my take: Single-skin kites are prefect for backcountry riding. Our experience is that the best sizes for a rider weight between 65-85 kg are between 4-9 m2 for FS and Ozone. Before you go to larger sizes, you should also consider open or closed cell ram pressure kites. Singleskin kites are so lightweight that they fly very early on, and for backcountry touring you also have to haul less weight uphill. For extremely high and gusty winds, when things can get gnarly, I still prefer dual skin ram pressure open cell kites. They do not have such a significant frontstall problem as single skin kites. Of course LEIs are also an option since the leading edge can not collapse during a front stall. For epic ‚perfect condition‘ snowkiting days, my best choice are still ram pressure closed cell or open cell kites.