cheap wakesurf board for large guys'

I am currently surfing behind a 1992 supra sunsport with 2200 lbs of ballast and custom homemade surf gate. I run 4 550 bags double stacked next to the motor with driver side bag pulled back onto rear seat . Right now I own a ronex cortez 4'8", hyperlite landlock, and cwb ride. My wife can rideall three boards with no problems so I know the wave is very surfable but she ways half of me or so. I can ride the landlock for twenty seconds or so before I pearl the nose trying to stay in the pocket. The cwb seems to be a little faster but I have to put my foot half way off the grip on the front to ride causing me to slip and fall. The cortez seems to be the easiest to ride but I only fall or loose the wave by pearling the nose of the board. I think my issue is having to put to much weight on the nose to ride that there is no room for error.I don't want to spend a ton of money on the board if I still have the same problems.