Don't bother! All it takes is research and experimentation to get crisp skin for smoked chicken.
There are a couple ways I'VE found, and I haven't done a comp yet. Since you are interested in comps, I'll assume you mean chicken thigs.
#1 - apply some salt to the skin, as it draws out the moisture and will
help crispen the skin.
#2 - chicken needs to hit 165° to be considered safe and done, right?
Once the temp hits around 150 - crank the heat and flip your
chicken over skin side down for about 5 min. then turn the
pieces 90 degrees and give it another two minutes, and it should
get crisp for you. (turning it 90° will give even grill marks and also
increases the surface area that gets charred by the
grill grates.)
The point is, just ask around - don't pay for someone to give you their "secret" as I guarantee you could get that same info for free on this, or other BBQ websties or forums.
Have fun experimenting!