Slingshot Infinity Wing

Hi guys,
i need some advice for a new wing; i am sailing in light wind conditions (10-15kts) with my slingshot wizard 114 and a 5,8 duotone f type sail; the slingshot hover glide f wind with the 76 wing is a bit small if the wind dies;
would you recommend a infinity 84 or 99 (170 lbs) for my setup and weight?

thanks
juergen

I've sailed both the i76 and i99, and I don't think that you'd gain much with i99 at your weight. I'm 2kg lighter than you are, and I've found that the i99 buys you about 2 - 3kts on the bottom end. It comes at the cost of speed, as it's noticeably slower. Going slower does make things easier (such as gybing), but you'll probably get bored pretty quickly.

The main variable is whether you're willing to pump/how good your pumping technique is. I've definitely improved my low end with better pumping, but it takes a lot of practice out on the water.

In 15kts of wind, you should find that your combo of weight, board, sail, and i76 foil should be pretty easy to foil with little to no pumping. Of course the wind speeds that people quote on Seabreeze are usually subjective.

A less comprised approach would be to swap your slingshot i76 foil for a high aspect foil. I've found that getting going on a Fanatic Flow 1000 is easier than the i76. About the same wind speed required, but you don't need to pump as much, because the foil accelerates faster (less drag).

I have i76 and i99. Since losing 11 kg (now 78kg) and getting used to using bigger sails - up to 8m foil specific - I havent had reason to use the i99 even at 10 knot average. When I was heavier the i99 made all the difference in light conditions though.

Big foil specific cambered sails are a revelation. I have recently been using a GA Air ride 7.7 (2 cams) and a Challenger foil race 8m (4 cams). The stability and apparent wind you generate in nothing is remarkable. I know lots of people think i76 doesnt work with big sails, and it doesnt if you leave the mast where it is with small sails, but put it in Position C (assuming B works for you on small sails), and its great. They are a huge pain to uphaul though, but fortunately thats a fairly rare thing for me to do in light winds. Not sure what the biggest sail that would work on your board is though.

I will give the i99 a go sooner or later in light conditions with a smaller sail (6.5, 5.7) and see how that works, but I cant imagine gaining much. The key thing you get with i76 and a bigger sail is higher speed, and this carries you through lulls - whereas the i99 has more drag (and more lift) so you cant get the top speed so high, but whilst ever you are moving forward you have some lift. The i99 will literally keep you up until the board is almost stationary, but it will become almost stationary sooner due to the drag and lower top speed.

thanks guys for all the good answers!
my biggest sail that works on the wizard 114 is this 5,8 dutone f type. i think the pumping technique is really crucial and there is plenty of training lessons for me to be done
to get flying earlier in the low wind lake conditions i am foiling i am considering the i84 and maybe the i99 too.. i don't mind going slower with my foil board, but the next key step for me is the foiling jibe, which is quite tricky with the i76 and this narrow board (66cm).

Honestly at your weight going with a bigger foil is probably a mistake. Even 30lbs heavier the I76 feels about right for a biggest wing unless specifically looking to ride slow swells downwind.

I'd look at technique and how you have that sail rigged.

At 200 pounds, I use a i76 with a Exocet 132 foilboard and 5.0, 6.0, and 7.0 sails. In Florida. This covers winds from 12 kts to about 22 kts. No need for anything else.