I used Co pilot for years. In fact, I have one I will sell you for a powerdrive V2 if you need one!
Yes, I-pilot would be great for your, tons of features including anchor lock and navigation to name a few. The problem is, when you start adding this things on to a motor, you might as well spend the money and buy one with it already installed. I just bought an I-pilot add on for a powerdirve V2 (the one I took the co-pilot off from) and it is a little over $400. If you be a reconditioned motor for a couple hundred, add on the $400 for the I-pilot, you basically have the same amount of money in a new one with I-pilot installed.
In reading your first post, you mentioned the word cheap.... this would lend me to beleive that you don't want to add the I-pilot at this time.
PM me if your interested in the co-pilot. I think they retail new from Cabelas for around $149.
I have OCD "Obsessive Crappie Disorder"