Second time for me but first time for the kids. I love how they just get straight down to business, no wasting time. It's only about 20 minutes from harbor to the cage site, and yes it is quite rocky. I was seasick as I always am on boats, in the way out, in the water and on the way back, but the crew didn't make a fuss about it. Offered water and chewing gum and let me ride it out. If you go on a boat in Hawaii and expect it to be flat you are in for a shock. Be prepared and it doesn't have to ruin the experience. Sharks appeared immediately when we got there, and there were at least 12 circling the whole time. We even saw a pod of spinner dolphins and a couple of bottle nose dolphins on the way out. Crew were great, helpful but not overbearing, just perfect. We loved it and can't wait to do it again if we come back to Hawaii.