Hi fishnchips,
I've used my Cobra Tourer just 3 times so far, and just paddling without scuba gear.
"Dive California" guy may want to chime in here, as he's had the same boat model a lot longer and done much more paddling. Carlos?
No underside blades...I chose not to install a rudder system because the lines would be on top of the deck and could get in the way when entering and exiting the boat. Also, I like doing beach entries, and I think the rudder could get munched if I roll the boat and waves take it to shore.
It's 15 feet long, so it tracks beautifully in smooth water. Great for fast beach entries, and punches through 2-3 foot waves very well. It's heavy, about 48 pounds. With surface chop or swells quartering on the stern or bow, the stern tends to get pushed sideways a bit. I'm starting to get the hang of paddling to counteract the swing. It feels like it might be more stable with the weight of dive gear in the stern. The stern rides a bit higher than the bow when there's no gear, so a strong cross wind also pushes the stern sideways a little. I had a hard time using a stiff, lightweight asymmetrical paddle, and it became much easier once I switched to the Cobra PowerFlex paddle: faster, better acceleration, better control of steering, not that much heavier.
Can't wait to start diving off it!
Which boats have you tried?
Claudette