Bow/Stern handles....

I want to replace the bow and stern toggles on an older yak with handles like white water boats have.

Anyone have a source for such things?

piece of dowel and rope,or
Ocean Kayak/Necky toggles are the best.

Several Sources
From CLC:

http://clcboats.com/kayakgear.php#handle

Toggles from Top Kayaker:

http://topkayaker.net/TopKayakerShop/index.php?main_page=product_info&cPath=2_16&products_id=242

And from Kayaking Fishing Stuff:

http://kayakfishingstuff.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=Con-voyager&Category_Code=misc

why?
Why replace them? Toggles seem a lot safer in rough water, when the boat wants to swivel around, than fixed handles that can dislocate your shoulder.