How to determine the correct arrow type?

[TSadler]

AA does an "estimated" speed first for each arrow it recommends.

Then, after you buy your arrows, weigh them and enter the information. If you are using movable sights and have a standard marker, it requests you take a solid 20 yard mark and a solid 30 or 50 yard mark. You enter the mark readings at those 2 distances and it will provide calculated speed, which is more accurate than a chronograph and then it will give you your sight tapes.

If you don't have a marker on your sight bar, AA can print one for you. That's how I get my pins quickly set for my hunting bow.

You can also add several bows.

My sister wonders why more pro-shops don't use it to recommend arrows for customers.

Here's their link - http://www.archersadvantage.com/

Perry also has several articles on tuning and uphill and downhill shooting that I have found very interesting and helpful.