I would not recommend that... When your kicked into your holds.. they should be snug. You should be able to pull out of your holds when ever you need to. Putting straps over your holds like that might be a problem if you need to get out in a hurry.
My opinion is NOT to do that...
A solution if your holds are a little loose is put another layer of turf inside your footholds to make them snug.
like this: