All the above is good stuff. I presume you are an instructor trainee. When we teach Prec. S.&L. we need to consider what the reasons might be for it. Weather, Daylight, Fuel, Sickness, Birdstrike etc. etc. Probably the most critical is the situation described by Formation Flyer and that is why we mostly teach that. The not below 500' rule is a problem, but there are Ag strips or other ALAs that 'look' very much like a paddock but we could actually land. I also use my local aerodrome with the tower's permission. I pretend to inspect the area between the first and second taxyway, between the runway and the parallel taxyway. This way I can safely and legally do the 200' and 50' run (over the runway) and then do a short field landing on the runway and see if we made it.