i've done it, very fun and very easy once you realise you have to hold on.
I did it at wetnwild in florida and gosh it was so funny wathcing unexpericend people doing it as they hold the handle but too far forward and don't realise they have to hold it tense, and i mean tense, next to their stomach when first taking off.
i really recoomend doing it as by the sounds of it you'll be doing it at a place that specifys in doing water sking where as wetnwild just had it as an extra thing to do so what i did would be nothing in comparison yet it was still lots of fun.
did this help?