This was the biggest pain in the ass for me. Luckily I had mine on a stand. I tried junkies way, but being a new motor(never ran) I guess the locktite hadnt set in. I gave her two taps and it dropped into the motor..
However all I did was bend a coat hanger to look like a fish hook and stick it through the dipstick fitting, loosen off the big nut and drop the fitting into the pan. The plug was sitting right on the windage tray. Pulled the fitting back into place tightened the shiat out of it and fished the hanger back through.
So there is hope if you do drop it in. However I would go with HRTs way. The minuscule amount of shaving from that will end up in the filter. If your really worried drain the oil.