[Paddlewise] Trolling motors & rudders

I fish a large area of sandbars called "flats".  Has anyone ever replaced their rudder or augmented it with a trolling motor.  I have a seakayak--not an ocean or "sit-on-top".  I'd like to know any bad experiences and or what type of trolling motor used.  Thanks in advance.
***************************************************************************
PaddleWise Paddling Mailing List - All postings copyright the author and not
to be reproduced outside PaddleWise without author's permission
Submissions:     paddlewise_at_lists.intelenet.net
Subscriptions:   paddlewise-request_at_lists.intelenet.net
Website:         http://www.paddlewise.net/
***************************************************************************