Peace of mind is always good. And when I go on long trips, I do lock my forks and maybe stick a padlock on a front brake caliper (always have 2 keys BTW), and always try to get a room on the first floor where I can look right out my window to see my bike (or hear something fishy).
(All I ever heard was the shenanigans of other members putting away vast quantities of beer or shine, or burning their under-britches

)
But Gryph is right, thieves are not stealing Valkyries (even beautifully tricked out ones). No 2-3 guys are going to lift one into a pickup (they don't like working that hard).
I suppose it has happened, but I can't ever remember a single story of a Valk being stolen.
Soccer moms and tourists sticking children on your seat for a picture is another thing.
To me, besides the fork lock, the best security for a road trip is a small half cover to keep the rain, frost and bird crap off, and the curious away overnight (about softball size packed). Almost no one will ever lift or remove a bike cover. And they will stop right away when they discover a laser dot on their chest.
Here's mine (and it's lasted for many years).
https://www.amazon.com/Guardian-Dowco-26014-00-Resistant-Motorcycle/dp/B000GROHP6/ref=sr_1_9?ie=UTF8&qid=1522090491&sr=8-9&keywords=dowco+motorcycle+coverOne of those motion sensor alarm padlocks (for a front brake caliper) might be an OK idea. But the sensitivity needs to be adjustable (so a fart or breeze doesn't set it off).
I have a neighbor who put his old truck on the street with an alarm, and every fifth car or motorcycle that drove by set it off. And he did not go out and turn it off, and it would go on for a long time. No one ever tried to steal his truck. We had to go over and ask him to turn it off, or turn the sensitivity up, or he was going to start having some vandalism problems in no time. Same deal in motel parking lots.