She read the address and showed it very briefly to Marcus, who also put the address to memory and then he tossed the napkin into the fireplace, burning it to ash. They wanted no chance that the address would be recovered.
"Porting would work very well for you," Khaat said. "However, even if we can make the location unplottable, which is possible, the problem you might have is in security."
"Layering," Marcus said quietly.
"Agreed," Khaat said. She looked at Kieran and said softly. "Your best bet is to put, in essence, a net of protection spells over your property after it is unplottable. Layers of protection spells."
"Its more effective," Marcus told him. "One large protection spell, no matter how large, can be undone by a skillful wizard. If you layer many spells over top of one another, you create a stronger safety grid over your property. Even if a skilled wizard breaks one spell, it is much more difficult for him to breech all of them simultaneously. Its not unpenetrable, but it certainly does buy you time. You also need to have alternate escape routes out."
"If you get a farm property, you can put up barns and other outbuildings that would hold pantries, storage rooms for supplies, and other larger rooms that would look rather innocuous," she said. "It also gives you countless opportunities for them to learn by doing. Herbology, care of magical creatures, defense against the dark arts, potions--you need all of it on a hidden farm location just to survive. And, what most students seem to hunger for is seeing how their magic can be put to practical use. That would certainly reduce boredom."
She took a sip of her drink, thinking. "If you are in the city," she continued, "it seems to me that you could take over a large warehouse in the muggle industrial district and secure it. If it were me, I would have both and have portkeys between both properties."
"She has a point," Marcus said. "The best way to protect any client or target is, actually, to keep them moving. Letting them sit too long is making it easier for someone hunting for them to hone in on them. The problem for you in doing that is that you may well not have the resources to keep uprooting them from location to location. And the tracers will have to be moved, turned off and on, repeatedly."
Her mind was working overtime. "I think I can help you. I'll arrange for you to have another spot for you all to land in. And I'll find a back up. I'll make sure they're supplied. I'll get you portkeys. From there, I think we can train your people to assemble and maintain a protection grid. If there's one thing my family has learned how to do, its how to make a safehouse. Or safehouses, as the case may be. Do you think it'll work?"