"The ideal thing is to get in the air and contest but we want to be a complete pack so we'll try everything. If we think there's anything in it, then we'll pursue it."
When the Lions last toured New Zealand, their assistant coach Andy Robinson was so concerned that New Zealand had cracked the tourists' line-out codes that they were changed in the week before the first test with disastrous consequences.
The Lions lost 10 of their line-outs as the All Blacks closed out a comprehensive victory in Christchurch as Sir Clive Woodward's side went on to lose the series 3-0.
Kruis, who will call the Lions line-out in the first test at Eden Park insisted that 12 years on the tourists have such a multitude of options at the line-out that the codes are now uncrackable.
"I hope we don't have to change our calls," Kruis added. "We've built a good platform as a base for the calls. You tweak your patterns for each game but essentially most line-outs have a base.
"Once you've analysed the opposition, you tweak it, but we've shown we're there or there abouts. We can improve on those pressure moments, which are only going to get tougher in the tests. We've played three, four, five games together now and we're starting to learn scenarios."
The evolution of the line-out calls, under-pinned by the Lions guru Steve Borthwick is such that even if the All Blacks seem to have cracked their codes, the tourists now have the ability to adapt unlike they were able to do in 2005 to mix it up.
"Everyone has systems," Kruis added. "You could learn the mechanics of the systems but there are so many different ways to call a line-out. You've got verbals, non verbals and the idea is to create a system that is tough to recognise and durable under any circumstance.
"It's like running a backs move. You might be hitting up Sean O'Brien every time but the third time you might go out the back because you know they're going to bite on him. You play on facts but it's all part of the puzzle.
"That's the plan. If you look at stats, they're the best in attack and second best in defence. We know they've got five or six good jumpers in the line and they'll always pressure your deliveries if they don't get the ball in itself. Good teams have come down here and won the ball but not provided great delivery to theirs nines and 10s. We want to be a great team and win ball and get good delivery."