Is it better to use a loop knot or tie tight to the lure when tuning crankbaits? I know the loop gives the bait more action, but will it hold its course better if its running to one side if tied directly? Which method will make it easier to determine if the bait isnt running true?

I don't have an answer to the question but I'd use whatever method of attachment while tuning that you use for the actual fishing. Because what you want to do--I presume--is have the bait run true based on the attachment method you're actually using while fishing.

   Like what has been said, use what you'd usually use in fishing. I recommend using a split ring and an improved clinch knot or something along those lines. It's stronger. tight Lines,

Bass Junkie.

I used to tie directly with a clinch knot whenever I used cranks. This year, I changed it up and started to use the Rapala knot on cranks. There really hasn't been any change..... I still catch fish.    

Use what's easier for you bud.

I don't have an answer to the question but I'd use whatever method of attachment while tuning that you use for the actual fishing. Because what you want to do--I presume--is have the bait run true based on the attachment method you're actually using while fishing.

yep good point.

just use whatever knot you would normally use when you're tuning it.

The primary purpose of loop knots are for topwaters.

The loop knot allows the bait to move more natural, its most commonly used on Spook type baits that you walk.  

The primary purpose of loop knots are for topwaters.

The loop knot allows the bait to move more natural, its most commonly used on Spook type baits that you walk.

That might very well be true, but the Rapala loop knot is recommended for their use of cranks/lures that don't come with the split.  So what I mean to say is that it is also a very effective knot to employ if you don't have a snap or split ring around and you want to use a lure than can benefit from the loop knot.

I use a small snap for crank baits. Seems to let them do their own thing.