Engine failures do occur but I would strongly suggest that if you are serious in preparing yourself for this eventuality your training should start with reviewing actions that will reduce the possibility of the engine failure and then progress to practicing the actions that could restore power in the event of a failure and only then work on actually flying the forced approach manooever.
BPF
Aviate Navigate communicate ? Surely an engine failure at low level means you should be putting your full attentions into flying the aeroplane and selecting a suitable landing area not head down fiddling with mixture controls, fuel selectors etc ? that surely is the way to loose control and crash?
Too many fatal accidents are caused by pilots not aviating and putting their attention elsewhere trying to restart an engine at 200 feet is a big mistake
Pace