Stick to your new 6m. The 5.5 maybe, a handful and will probably not be as efficient. Im guessing the 5.5 is older than 2000??
I would experiment with how much wind range you can get out of the 6m. By getting the right amount of downhal/outhal ect.

Ok thanks guys. So I take it my NP falls into the too old category ;-)

There's got to be a good use for old sails...

theres no use for old 'discmans' either.
dont give it away- just throw it away

we need a vinnies for old sailing gear

im sure these sails were before the z1 which was 98 model but the street racers name was on the v8 in 96 and the range before that so it bloody old

How do these old sails fair for being cut down to kids rig sizes?
Ive got a couple of sails that I've thought about trimming to size for my 7yo to try on.
After seeing Chris and his son up at low head on I think an ezzy kids rig though, the gear looked so good with smaller boom and mast-light enough. Is there much difference or us it like me choosing my new 6 against the old 5.5..?..throw the old gear away I can hear someone yelling! :-)

Kiids rigs are more specific again than the wt learner boards rigs
They have very short skinny masts, very light narrow booms and small ( 2.5 ish) metre sails.
The kids rigs are very well priced and you would not even consider making one up when you can buy a mast, boom, base and sail form around $250! when they are on special.

Yeah ben, we have done that back in old days !
used to 'skate sail' around the top of carparks and have weekly events/meet ups.
perfectly honest the mountain board type boards are a lot more versatile.

sorry Ben, thought you were talking about skateboards specifically, excuse me i lost the plot for a bit ( Or more!!!!).
yes , agree great use for old rigs is the landboards