choco said...
Would it be possible to buy a complete kit for under $1000 and run 40 knots with?
Yep, but only in ideal conditions, and you might be waiting a while for that! Modern kit will enable one to run 40 knots in much less than ideal conditions and far more often.
eg, older speed board and small slalom fin or if you are a bigger guy a small slalom board. Older 4m to 5m speed/slalom sail or even wave sail if it's windy enough.
I have just touched 40 knots peak speed on a wave board and 3.7m wave sail with the standard fin, but it was hell windy!!!!
Geeze, I recon I have a heap of very old kit tucked away that would technically be worth bugger all but would easily crack 40 knots
on the right day (35-40 knots of WSW on low tide at Sandy Point). Not that I would sell it mind you. It's part of my 'museum' collection!

I am hanging out for 'that day' so that on my modern equipment I can have a go at 45 knots plus.