Ok, who can tell me what the difference is between a pattern prop and a sport prop? Obviously they are designed with a particular application in mind, but what are the pros/cons of each type? Also, for prop sizing, are the two identical (i.e., would I use the same 13x8 size, for example, whether it's a sport prop or pattern prop), or is their a rule of thumb for sizing between the two?

Thanks,
George