+1 For the SUP Grip Handle, you can buy them through Blue Planet SUP Australia, www.blueplanetsup.com.au/ don't bother with a standard ledge handle these are sooo much better.
I have 2 types of ledge handle.
The grey ones have a really nice deep rolled ledge and the white ones have a form fit ledge.
Both are $16.50 + postage, or can pick up from Sutherland Shire (Sydney)