In support of what @Razorskier1 said...I had a 26yo friend at the lake last week who is a very good athlete. He had previously skied on two skis years ago, and got right up on a nice set of new $200 67" combos. The next day he wanted to try slalom. To my amazement ...and relief, he nailed his first deep water start (deep V training handle may have helped) on the slalom ski from the combo.
I let him ski a little ways, then dropped him, and promptly had him put on a backup 67" Radar Senate w/ Vector boot, that I keep on hand. Despite the tail being a bit narrower, he got right up on it first try again, and said he was amazed at just how much more stable it was.
He was pumped to be introduced to the world of slalom. Next day I got the obligatory text from him saying "my everything is sore".