To get back to the original query
Maybe these grades are not that high. take the Zambezi. I believe beginners
are regularly taken down grade 5 rapids here and if your safety boater was
Alex Nicks then he could well be up for grade 6 after tea !

"ZattleBone" wrote in message
om...
Anyone know the differences in the two grading systems?

A friend has just come back from South Africa where (as a complete
rafting novice) he was running Grade 5. The kayakers supporting the
raft all went off to do a Grade 6 run in the afternoon. The numbers
seem a bit high to me.

Any ideas? Is a grade 6 raft-rapid actually a grade 4/5 kayak-run?

Zatt.