â The presence of marijuana is detected by a drug test through the presence of the active chemical THC or Tetrahydrocannabinol. Technically, what is detected is known as THC-COOH (11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid).
1 Average Riding Instructor Salary: Independent riding instructors typically charge an hourly rate for services but on average earn about $35,000 to $39,000 per year.
Tandem and AFF instructors typically are paid $30 to $35 a jump. If Florida with a year round season, instructors can make 1000 to 1,500 jumps a year, so on the low end for a â¦ full time instructor in Florida $30,000, on the high end $50,000.