The problem is for a majority, the seasoned vets are either A, not in patrol. B, Disgruntled and dont want to be PTOs or C. Are slugs who are ROD and don't teach much as a PTO. The less senior guys are still go-getters and like to work and enjoy teaching the brand new folks. Id say 3-5 years is a good amount of time to be eligible for PTO, to teach basic policing to someone is not a super difficult task if they are squared away.