i like the screwdriver technique,just make sure the driver is long enough that if it slips off the oil pump driveshaft it wont fall below the distributor mounting surface of the manifold!
this happened to me once and the driver handle was a close fit with the dist.hole and 3/8" down.
finally had to put a drop of superglue on the fingertip and let it set up on the drifer handle,then carefully lift the screwdriver out!
what a pita!
86 camaro,383,topline vortecs,scat crank,wiseco forged 9.5:1,6"scat rods,comp xs282s,performer rpm,750 proform vac sec,msd in cap, hooker coated 1 5/8"headers,3"flowmaster,700r4,2800 stall,3.42 10 bolt posi,hotchkiss lca's,aje tube k member & a-arms