The CCG doesn't have to reinvent the wheel but they probably are. The use of ERTV's have been for decades. Foss Maritime is who Alaska (Prince Rupert to Anchorage) and Washington (Neah Bay) use as ERTV's   Canada taxpayers will pay for the ERTV's  

Both states have had a Escort Tug regulation/law (2 tugs per vessel ) for almost 25 years now. Note in both programs are paid for by the marine shipping industry. The KM TMX still hasn't provided the NEB with their Escort Tug plan but it will be weak given the lack of Escort Tugs and the distance (Vancouver to Buoy J at entrance of Juan de Fuca/Pacific)

If pipeline goes through and even now being that BC is 25 years late, their should be 2 Escort Tugs with pilots per tanker and other large vessel already.