When choosing the wheels, the wheels size and the wheels hardness are decisive.
Wheel size, diameter:
For surf skates, suitable wheels are in the range of 60mm to 75mm diameter.
Small wheels are more agile and work better in the park, on transitions or in the bowl. Larger wheels are smoother and work better on bad surfaces or just on the road.
The higher the durometer (A degrees), the harder the wheels. Soft wheels offer more grip when carving. Hard wheels slide more easily.
78a – 83a is a very good average and is recommended as standard for surf skates.