Works great to use your kicker for thrust and bow mount to steer. As I salmon fish a fair amount, my kicker is tied to the big motor with remote steering at the console. If strictly walleye fishing, I definitely see the advantage of a tiller kicker, though.
I would definitely recommend bolting your kicker into your transom. If not, you will be one of the guys that ends up with your kicker at the bottom of Sakakawea or DL (or even worse, flopping around on the back of your boat) when out in some good rollers. Between the right tow rope or a tow bar, you can manage pulling the kids on tubes without taking your kicker off.