I agree with everything except for this: "should produce a noticeable lump in the snake, but shouldn't persist for more than about 4 days or so." I believe any boa should not be fed any meal that makes a noticable lump. I tend to feed smaller meals to boas. generally a meal that isnt noticeable at all or just barely. also if it takes 4 days for the lump to disappear it was to large of a meal. imo. Boas especially dumerils have a much slower metabolism than balls or even rtb's. from what i've seen most dumerils seem to peak out around 6 or 7 years old where they just dont seem to grow much at all.