When wrapping the bacon/pancetta, make sure the fat edge is exposed and there is minimal overlap; it will give you a more even, crispy result. Laying the wrapped spears on a suspended tray will also ensure improved circulation of heat and a better result.
Metric kitchen scales are an inexpensive yet invaluable gadget to enable accurate measurement of ingredients. Store them upright in a cupboard or over your worktop and they'll only take up a tiny bit of space. Click
HERE for the ones I use. For U.S. option click
HERE.