I have played on a lot of tough patterns and the long ones flat gutter to gutter is tough.

I have found that playing down and in is by far the best approach.  Try to make it simple.

Last week in my league I played on a long pattern that had 7 board to the gutter heavy oil.  It was not playable if that oil was touched.  The outsides were oiled to 46 ft.  The rest of the pattern was from 44 down to 42 in the dead center.  Kind of a reverse christmas tree design.  Very tough.

Well I played down and in.  No swing at all!  I played up 12 and scored well.  I threw 9 strikes the first game with a 6 bagger and a 3 bagger.  The other 3 frames were splits.  I used my Raw Hammer Pain (pin above bridge 5.5" from my pap,cg kicked right to 1oz and no balance hole) and this ball rocked.

So I would suggest if you can to play down and in just like WRW.  I would use a solid reactive ball such as the Pain.  The Pain can handle heavy oil but also will give you enough movement to recover coming out of the oil at 50ft.

Plus don't forget that the break point on a condition like this should be around the 13 or 14 boards.  Very close to the pocket if you want to carry.  So check your revs at the door and you should be good to go.  

I hope this long post reply helps you out.

thats how I play this shot but carry is few and far between.basicly I hit the pocket and make my spares.if I tried to adjust something to carry I would pay the price.I was even makeing 10 pin spares with my the big deal!the clean backends were the real challange for me,point it and in the nose,give it a little room and miss the pocket.shot a big 563.
--------------------
B-dub in the house YE'all..