I can't find one so here it is. Watch it here.
Beg the Committee members to keep it simple! We know what the senators think; we (hypothetically) don't know what the nominee thinks. The more opportunity Roberts has to speak; the more likely it is that, with a slip of the tongue, he'll tell the truth. At very least, hours of Roberts pleading the fifth (yes, I know, not literally) might make the public wonder what Roberts feels he must hide.
Also, since Roberts raised the question of judicial activism with the umpire metaphor, drill him on it. As far as possible they should avoid further use of the hackneyed sports metaphor itself, it makes the questioner look stupid at this point, but pound the point. Ask many, many simple (as in not compound) questions which relate directly to Roberts own words on the subject, during his testimony.
PLEASE! Enough with the speeches! PLEASE!