Swim platform bracket replacement

[tnltracy]

Can anyone point me in where to look to find a replacement lower bracket for my swim platform. Unfortunatly no pix, but its a relatively 'standard' style small platform that's mounted to port side of my outboard.

The bracket I need is the one that runs below the platform and mounts to the boat. It's heavily rusted out. Sort of L shaped. I was thinking of fabricating something, but maybe folks here know a source for such parts?