I would say take that Rhino with you when you get your Marauder drilled and have the guy in the pro shop watch you bowl with it, and also so they can measure your PAP (Positive Axis Point). This will tell them where to drill it for optimum performance for YOUR release (everyone's release is different). This is what I plan to do with mine when it arrives, so that it's drilled perfectly for the way I bowl. I figure if I'm going to pay someone to drill my ball, I want them to earn every penny.
As for tips and pointers, youtube is your friend when it comes to bowling tips. There are plenty of good videos out there that will help you improve your score. I've spent the last month or so absorbing all I can from videos like this one: http://www.youtube.com/watch?v=N5nnDbV0znE and also from watching the Pro's bowl in various PBA tournaments you can find on youtube. This site is also a gold mine for information, just about every bowling question out there has been asked and answered on this site. Last but certainly not least, if you can upload a video of yourself bowling to YouTube and share it here, there are plenty of folks who are experienced coaches who will critique your game for you and offer pointers for improving it. I plan to do this soon also once the new ball is drilled and I've had a chance to get used to it.
Hope that helps!
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