Best is to drop it in a taming pen. With or without a taming pen, use a bola to keep it in place and hit in in the head with a hammer. Higher grade of hammer the better. Did this 100% without a single one dying before knock out. Tranq arrows and cross bows I killed 8 of them before I gave up and used the hammer technique.
These things are annoying as hell to tame. For all of the ones I tried To tame, and they died. I used a crossbow and I almost got one knocked out but then a dilo bit once and it ascended to a higher level. They are decent travel tame however.
A bola does not work and because they are so fast it is impossible to knock out even with having shokingdart the only way is to consume a flower. if you consume a flower it will make herbivores come to you and try to eat you. and before you do that make a wood enclosure (2×2 2 high and with ramp) and then you can knock and tame. and it doesn't have a lot of time so you need a lot of narcotics depanding of the level. they are the fastest land dino so if high level it could out run a wyvern