The answer to this question again comes down to subjectivity. I'll discuss what a hollow truck is, pros and cons. The decision is yours whether you need a hollow truck for tricks. As a skateboard part fully made of metal, regular trucks are quite heavy. This heaviness sometimes becomes the deciding factor in technical skating and tricks. Now, the difference between a hollow and a regular truck is the hollow kingpin and axle, which ultimately reduces the weight of a truck. However, this lightness comes at the cost of durability. So while it's totally Ok to use hollow trucks for tricks, whether you want to sacrifice the durability is up to you.