I think it's about time Merlin invested in Congo and Rumba. Some new high backed boats and netting, or something in the design of them, that makes it impossible to fall out of the boats. I refuse to believe a fool proof design that's safe cannot be achieved if the will, and the cash, were there. A full investment in water effects, theming, and spectator interactions, coupled with a marketing campaign, and both rides have the potential to be great. A return to the theme park staples they once were, that I think the demand is still there for.
My ride on Rumba last week was indeed depressing, but all the way round I was thinking about how much potential it has. I think these rides have an important place in both park lineups, especially since both parks are suffering in the 'whole family' department at the moment.