Well I'll start off by saying I have an order in with my proshop to drill one of these up at their earliest convenience so there's no hesitation here on whether or not to pull the trigger.

I was finally pushed into one after being jammed in a corner where my Venom Recoil and Shock were forced too close to the friction on high volume patterns, struggling to get these into a roll. Normally my local THS patterns have played opposite, lot of friction and lighter units where it has been easy to create area. It doesn't help that many crankers in my league have jumped on the urethane craze creating even more "hold" while the house has changed the pattern. Specifically the Purple Hammer & Pitch Black.   

After conversing with bowlers this past weekend I couldn't held but post up their comparisons of the Tank to other urethane such as the Black Widow Urethane, Honey Badger Urethane, and Pitch Black. Their general outlook on these other higher flaring pieces is they still create carry down with their shells. The last thing I want to do is add to the mayhem. Any input? 
 

Playing in the puddle on the majority of house shots for majority of bowlers that are multi-dimensional Shock is very usable.   Tank Blitz same weight block with stronger cover (Frixion+ Microcell Polymer which is resin even at 3000/4000 and not urethane) is more ball than a Shock especially OOB. 

Covert Tank being Frixion Microcell Polymer is more urethane like slower absorbtion rate with a short pin layout taken to 4000 spinner would be a in the track type use.

My stats. are in profile.

Totally agree for the majority of house shots but actually like my Recoil a little more than my Shock (and both more than the Blitz).  Literally the only house in the area can't use my Shock or Recoil is also the one nearest work and where I bowl league.  Slingshots, Strike Kings and Power grooves are what people throw.

Venom Shock Pearl if you can find one... Great midlane and control on hooking lanes

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Slingshots, Strike Kings and Power grooves are what people throw.

Equals Thrill.

See ball guide which I think OOB is very accurate for strength of Motiv equipment.
http://www.motivbowling.com/ball-guide/

Total hook OOB. 
1.) Tank Blitz
2.)  Venom Recoil
3.)  Venom Shock

Agree totally with this order as well (Blitz is a ton of friggin ball).  Yeah have plenty of high RG low diff weak reactives but over under can be an issue which hoping Covert can help with.  I need controlled back end more than I need entry angle.  Guess could look at a short pin to pap on one of them next if Covert doesn't work out. 

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Agree totally with this order as well.  Yeah have plenty of high RG weak reactives but over under can be an issue which hoping Covert can help with.  I need controlled back end more than I need entry angle.

Covert Tank layout needs to match up with your stats.  OOB it's a lot of ball but surface slows it down along with weaker cover.  I like Mike Magolan's 110*x1"x25* layout on his CT video for control OOB. 

I have a Thrill drilled relatively strong.  80*x4.50"x40*  OOB 5500 and using a forward roll under the ball release find it easy to control playing in the track on wet/dry house walls 12:1 40'.    If I add axis rotation then it could be an issue.

Thanks for info (sorry for thread jack OP).  Good stuff.  Recovering spinner (also speed dominant) so generally avoid drill angles greater than 60 or ball will skid for 60' especially if reactive.  IIRC correctly PSO went 60*x4.5"x40* on Covert.  I would rather have midlane than backend (though wanted a little bit of pop for carry which core should give) for this house so if need to be further left so be it.  Looking forward to throwing it later today.  Have a fall back plan to use a Blue Hammer remake with some surface if need be.  The main thing I love about this Microcell cover stock is it doesn't seem to be as allergic to early friction it just stays in hook phase instead of immediately rolling forward.

I'm telling you guys. For the great Wall, I could Chuck the Covert at the gutter and it was nice and smooth, but never quit.

See "Recovering spinner (also speed dominant) " . 

my buddy was asking me about the tank blitz last night, he throws motiv but he's got mostly the older stuff though.  and i laugh now because my comparison was the same as i'm reading from other people.  it rolls like a strong solid for me.  i don't see a urethane reaction.