Clickers aren't for every dog and there are plenty of solid training methods that have been around long before clickers came into vogue. Repitition is the key. Start with a long line so that you can reinforce the recall. Then work with distractions before you graduate to working off leash.

My female Weim had as strong a predatory instinct as I've ever seen. Little critters sent her into spasms. After a lot of work, I got so I could call her off a squirrel.