Spank:
Just remember, no two patterns are identical .... really, it takes an average of at least 10 patterns (same barrel, same choke, same load) to learn anything of statistical value - and paper patterns are 2 dimensional ! The occasional "hole" in a pattern means very little when you take the length of the shot column into account on a rising and crossing target. Skeet shooters are often heard saying "don't look at your patterns, especially from the 410" ... you might be surprised how you it anything with the little idiot stick !
If indeed you're hitting your targets at +/- 32 yards from 16, (and most experienced Trap shooters do) Modified is more than enough choke with # 8's. By your own admission you jump the odd target ... Modified will likely be a plus for you "Speedy" and you will notice less bottoms and edges shot off. I know it's a hard habit to break, but Full is more of a liability at 16 than it is an asset. I know, I know, if your on, your on ... but what if your off just a little ? Besides, what do you do when you find yourself at 27 ? Targets being broken at 40 yards + is Full choke trritory. Ask the Sporting Clays regulars what choke they prefer for 32 yard shots .... they'll probably answer I/Cyl. or Lt/Mod. !!!
It's hard to get an ol' dyed in the wool Trap shot away from Full at 16 yards, but give it a fair try - and stop worrying about ink-balls. Straights are far more satisfying than 22's & 23's !