I have been mostly using a pin up Mission X with good results and a pin up Columbia Freeze this year (good results occasionally).

Often as the backends have been a little stronger my Mission X has been leaving me 6 pins as the backend has been a little sharp!

I believed a symmetric could work but the Freeze has been a little skittish alternating between 8 strike games and 1 or 2 strike games with humungous looking 9s!  All balls smashing the pocket.

I reasoned maybe a pin up Solid would work nicely for control of the fronts and smoothness.  Today the Grand Illusion had a beautiful combo of smoothness and creating beautiful angle and hit at the pocket that allowed a couple of simple strike filled games.  Hmmmm, first impression.  me Like!

Been sitting in a box for a couple of years!

Regards,

Luckylefty

Very doubtful though the numbers say they are close that a Disturbed coverstock strength wise and a GI are even close.  To many years have come and gone and cover strength has gotten stronger as we go forward.  Ultimate Vision solid would be considered in the HP2 line.  In fact, if you go into Ancestry in RG's site they suggest comparison balls in the HP2 line.

My suggestion is get a Rumble drill relatively strong and adjust surface as needed.  55M solid and high Rg with surface still will get ball down lane but not too far plus won't burn up and calm side to side violent reaction wrongsiders see with beaucoup axis rotation.  Medium strength cover will have enough to kick out back row but won't over react.  Rumble is the house ball for modern house conditions that most bowlers by pass because the think they need something stronger.  That might be true for high speed no handers but for those with a relatively medium speed and medium hand it's the boon to the house bowler.  More bowlers should be using them and the solid cover is easy to adjust for different reactions.  Plus they don't cost an arm and a leg.

I understand what you are saying about drilling the Rumble a little stronger with it's lower differential.  Maybe an idea!  thanks.

It's more about the ball surface the high Rg and the numbers with lower total diff. and a control medium cover stock.  Ball can scream off the side for lefties on shorter to medium house conditions with no carry down and no ball traffic.  Rumble would be a perfect choice.

BTW....this also follows with PBA players using an Uproar inside on the burn as righties.  I just drilled an Uproar up and see the same qualities of the Rumble.  Control if you can move inside of your comfort zone.

Your stats?  Lane condition length and volume?  Lane topography wood or synthetic new or how old?  Sloppy backends mean what not stripped on left side or what?

Grand Illusion is not a strong cover in comparison to today's RG covers.  It would fall in the HP2 line.  If it was me I'd use surface before adding an x hole to change ball reaction.   



 

To clarify, I our house pattern is somehow different this year while still snappy off the break the backends are sloppy to last year and I am a good tadd faster!

Most of the time I use an awesome pin up Mission X with polish!  Quite a change from last years Sonic X solid(won't carry this year).

Still solids, stronger cores, me= more speed!

My second ball out of the bag is the Old Timey strong cover I think, Grand Illusion).

I have a second Grand Illusion on way with (an expected flare increasing weighthole)

Regards,

Luckylefty

Brunswick Anvilane , speed creeping up near 15.5 maybe 16 at the pins.  Used to be near 14 for the last few years!

That is a huge change.  Personally, cameras at backend are nebulous at best and I'd never go off of them.  Play straighter speed goes up ball needs to encounter friction and slow down to hook more boards covered slower ball speed. 

I use this frames per second way of measuring ball speed off hand as it takes friction at backend to create hook which is dubious.  http://wiki.bowlingchat.net/wiki/index.php?title=Measure_Ball_Speed

oh my, I hook it!

Regards,

Luckylefty

Don't mean much you can't compare bowler to bowler by backend cameras.  Note what you ball speed is when throwing a poly ball at 7 pins vs. your strike ball covering boards.  Backend cameras all a crap shoot.  What I posted is real ball speed.