Lee- some good advice in here. Talking with Austin would be a great idea, I have always found him to be open and helpful - and he knows LBs
LB crew has given a good run down of rails and bottom, he has the knowledge- his description sounds a bit like the Jim Phillips 9'6" SWT2 I have - noserides great and able to turn. The thing I had to adjust to is the softer rails do not release like a tucked or hard rail, so trying to make speed like you do on a perf LB or SB doesn't work- different ride but fun.
PM me if you want to take a look @ it to, see how the concave/raiis are set up. Also with a single fin you want a good fin I found the Greenough 4A fin really works well - real popular in singles