Firstly I want to thank Rick, aka AquaPlow. I mentioned somewhere on the forum that I haven't tried the 8m Peak4 and was waiting on stock for a few weeks while Flysurfer made more. Rick, who had purchased an 8m Peak4 from me, contacted me and said he would be happy to loan me his for a few weeks as he had come off his bike and sustained a fracture which would keep him off the water for a while.
I accepted his kind offer and true to his word, Rick posted the kite down and I've had it out a couple of times in some light wind.
First time I took the 8m out the wind was direct onshore and I had to struggle out to get enough depth to get up on the foil. Wind was averaging 7 knots with gusts of 10 knots as measured on shore. This was pretty close to accurate with the local Seabreeze wind stations. However I was beaten out by another local, Aaron, approx 20kg heavier than me, on a 5m Peak4

who proceeded to get up and going albeit sining the kite now and then! (We're both on 1250sq cm surf foils, mine a Moses 633 and his a Naish Large).
After running aground once trying to get started in the light onshore breeze, I got up on the foil and felt comfortably powered all the time I was out. The kite felt like a bigger 5m, with slower turning and a bit slower through the air. However it was still easy to loop and even in the lulls had enough power to pull me through downwind manoeuvres when I almost stalled the foil. One could have possibly flown a light LEI kite if you had sufficient skill and kept it moving but the slightest error would have seen it in the water.
I came in and gave the 8m Peak4 to Aaron as the wind had not strengthened and he was struggling to keep going with the 5m kite, (fair enough!). He went out and had the power to keep foiling in the light winds. Aaron has only recently started foiling in Spring last year and is still progressing but after one try of a Peak4 he bought a 5m and loves it. After trying the 8m he'd much rather use the 5m wind permitting, (don't we all like a smaller, faster, more responsive kite), but had to admit the light wind performance of the 8m can be the difference between going for a foil or whingeing on the beach.
Had the 8m out again yesterday in winds that were even lighter with barely a whitecap in sight but a bit better angle than straight onshore. Had a really good session close to the kites sweet spot for me, with the occasional swell rolling in. When I caught one of these swells far enough out, (they were't that big), I could really feel the power through the foil and ride the swell with minimal attention to or pull from the kite. It's these situations where only the Peak4 could be used. There were some others on the beach with various sized LEI kites up to 14m but none stayed in the air long enough to get past the shore break.
So is the 8m worth having? It works like the smaller Peak4's and some owners say the best Peak4's are the 3m, 4m, and 5m models which cover a significant wind range. You wouldn't use the 8m if you could use the 5m coz small kites and enough wind are more fun on a surf foil. However there are days, and in some places many days, where the wind is 6 knots gusting to 10 knots all day and you have a surf foil. You will be out foiling, having fun in your waterway on the 8m while everyone else waits on the beach hoping for more wind. Sure you can get a twin skin foil like a Soul or Hyperlink which will cover this wind range and have more grunt and speed. But it will cost nearly three times as much, won't turn as tight or fast and won't hang in the air like a Peak4. So even though it improves my lower wind range only by 2 to 4 knots it's worth it for me and I'll grab one for myself when the next shipment arrives. The only downside I can see is more time having fun foiling means the I'll be relying on the local kangaroos to keep the lawn short ...
And thanks again Rick, your generosity has been much appreciated. As soon as my kites come in I'll post yours back