Either. Honestly. The centerpiece of both parks is a wave pool, the pool at TL is bigger. After that, there's not much swimming required. Do you simply not like being in water, or do you not swim? TL has a better "lazy river," a three foot deep, slowly moving channel with inner tubes. I love going to TL the day after a late night at PI, throwing a hat over my head, and just floating in circles all day.
On the other hand, if you have no intention of hitting water, then your hTb may like BB better due to better slides, or he may like TL better due to a more relaxing environment. Interesting to note BB is more "teen oriented" with the thrill slides. As a redhead who burns at midnight in February, I love the tropical coverage in TL.
Either way, not being a "swimmer" is hardly a pitfall.
Pat