I bought a 2.0m Starboard sail and cut down a mast to suit. For 10yo or younger it might be OK on a wide board with centreboard like a START. I found on the GO that the lack of centreboard meant it basically couldn't be tacked, so I had to use a wave ski and tow the board and pupil back to start, taking twoce their sailing time.

Now my kids are bigger and I make them use a 4.0m sail for learning.

I forgot to see where you are, but its worth noting that the hire at Pelican Point would last year let you have a START plus 2.0 sail for $10 per hour, a brilliant bargain for teaching kids!

You an also buy my 2.0 sail and short mast for $50 if you want. PM if so.

Hi leoha,
we just got back from maui, it was flat for most of the time so I got our 9yr old a 3.5mtr neil pryde "one" rig. In 5 days he went from not being able to up haul thru to waterstarting, planing and footstraps by the last day. He was even holding it down on days when the women were on 4.2's.
The new generation of kids sails are amazing, they feel like a proper sail, light and really stable in their hands. The np sail came with its own mast, boom, base, all sized for little hands. He loved it. Well worth the money considering it performs well enough so he can use it all the way thru learning and into the waves.
One word of advise, dont get a reaal small sail thinking it will be easier for them. We got him a 1.8 sail from another company last time and although it was easier to uphaul, once he got it up there was no stability which we found was actually harder for him to use.
When your looking around make sure the sail has a proper profile not dead flat and "twithy" like some of them tend t be.
Ps another bonus was that it was great to teach my wife on as well so I didnt have to rig 3 sails haha

Your best bet is to contact you local Neil Pryde stockist. If they dont have one they can order it in. Definately worth doing. Our little one is 9yr old and about 40kg and hes on a 3.5m if that helps as a reference point. Dont get it too small as we found it easier if hes got something a bit more stable in his hands ( doesnt fall backwards as often which was a problem with the previous brand we tried ) plus youll get more value out of it (just like buying shoes )
Another idea to make it more fun was to teach them on a board thats big enough to ride together, that way when you seeing they are getting abit frustrated or tired you can take them for rip riding the nose or in between your arms ( keeps it fun). Itook alex out to the reefs at kanaha and got a few waves and showed him the turtles, he loved it!! then by the time you get back they're ready to go by themselves again.

If your 5 yr old is anything like ours, they have the attention span of a pea, so you gotta make it fun for them! Alex was that age when we got his first rig. I was stoked when I saw the rig in the shop, it was just like a scaled down 4.7, I got all excited and got it. After a while of trying to teach him I realised that a 4.7 that has been scaled down to a 1.8 actually doesnt work ( too twitchy and unstable ) and its been stuck up on his wall like a poster ever since!
This NP One is way better, its got a decent boom on it and it feels stable like a normal wave sail. They come with the the whole rig ( boom, mast ect ) and its all super easy for them to rig, the only thing I needed to do was put a bit more downhaul on when he wasnt looking, but other than that he can rig it all himself. And to put the icing on the cake he even offered to derig my sail for me a couple of times now that he " knows what hes doing"
futures looking bright! haha

Maybe think about Hot Sails Maui aswell. www.hotsailsmaui.com

They have 2 dedicated sail ranges for kids ranging from 0.8 to 3.2m. They are basically a "micro" version of what you or i would use, but they are designed especially kids, they aren't a cut down version of a bigger sail as such. They also have all the rig components (boom, mast......) for them too. They have been making rigs for kids for quite a while now so they are pretty well suited for the lil ones