Both the Kyarra and M2 are regularly dived within recreational limits and ideal on Nx32%. Gas tends to be the limiting factor so yes, twin 12's would be a good configuration for these dives. Both are well served by frequent charter boats (Divers Down / Swanage Charters and Wey Chieftain / OHDC) respectively. Fortunately all of these are hard boats with lifts and most are cats, so ideal for divers, particularly with heavy kit. If you're looking to do some light deco, I'd still say a 7L Ali cylinder would be perfect for both of these sites.
Bottom time on the Kyarra is limited as you have to hit it on slack tide otherwise it tends to rip through pretty hard. I've seen the skipper on one dive tear a couple of guys a new one for overstaying their welcome .
Bottom time on the Kyarra is limited as you have to hit it on slack tide otherwise it tends to rip through pretty hard. I've seen the skipper on one dive tear a couple of guys a new one for overstaying their welcome .