Hey Gary,
The Landlock to Loogey is quite a jump in terms of board shape, but it is doable, just might take you a couple of days on the loogey to get used to it. We had the Landlock as our first board and the Loogey as our second.
That being said, I'm not familiar with that boat, but I'm 200lbs and had a blast on the loogey. At 200lbs you probably won't be blasting any huge airs too soon - unless you have a huge wake. Here's a little video of me "showing some fin" last year on the Loogey. Nothing like Chase or James...
Anyway, I sold mine a while back since I'm making my own boards now...
http://www.youtube.com/watch?v=iGOLYQb-JKU Smed