I know Balloch fairly well. When I was at uni, I would frequently take the train there for day trips walking on the banks of the Loch. I hope if this development goes ahead, it is sympathetic to its surroundings.
There is already a well established tourist development on the shores of Loch Lomond. It has a Sealife, shopping and a visitor centre. More recently, they've added a ropes course and mini golf, so there is obviously growing interest in the tourist potential there.
If this proposal is located where I think it's meant to be going, it will link the village with the existing development. Currently, the village and loch front have a very relaxed, outdoorsy feel. I'm concerned that Flamingoland's brand of leisure and entertainment may throw off this balance and create something more brash and tacky.
Words like "observation tower" certainly don't allay my concerns.