Water and Terrain issues

I'm having two problems that are driving me up the wall at the moment so I hope you can help me.

Need Mesh import to have properties of Terrain

The main issue here is I want to be able to paint onto my mesh with textures the same way i could with the default terrain in unity but I can't seem to get it working. I've tried copying components over but no luck. I've also went searching for solutions but I can't seem to find a solution for the latest (free) version of unity since they have made big changes to the terrain options.

Need water basic to have more than one wave

The other issue is that when I use water basic it seems to only have one single wave. I've tried rescaling and adding multiple tiles but nothing works. I've tried searching for solutions but I can't seem to find anything.

There might be the simplest solutions to these but i'm having no luck.

I'm using the latest free version of Unity (4.2 or above) and I understand theres been some big changes and its made looking for solutions rather difficult.

Hope you guys can help me out! Hopefully I've given enough info.

Cheers