I go to center caves, 2 in redwoods and floating island are best. Full ghillie, bug repellant, sacrificial sheep, chainsaw, sleeping bags, preserving salt. Use wyvern wing flap your target to safe area make sure bat is just above character level. Kill that ovis with chainsaw! Place sleeping bag just in case.. Put taming mutton in inventory with half stack of salt. Rest of salt and mutton into wyvern. Ghillie up! Bug spray! Walk slow! Stand under feed, do not move. Stand there for 5 mins(might be shorter but dang its long) it goes faster after that first bite. Keep track of repellent back away slow and reapply if needed! Perfect tame every time!
You can absolutely tame them through a wall still. Just finished a 145 tame with mutton, because kibble does not work. Build a 3x1 hallway with no walls on either end, agro run through place a wall in front of it, run around and wall it off. Barely derender, feed through the wall. 21 mutton for a 150, 4.5% per feed. ♡Hz