Climbing "co-dominant" or split trees requires extra caution because the union (where the trunks meet) can be a structural weak point.
When climbing between two trunks, you aren't just limited to vertical movement; you can use the space between the stems for better stability and concealment. Teo Trunk - Climbing Trees
: For thinner vertical trunks, climbers often use a "pinching" method, gripping the trunk with their toes or turning their feet outward to press crosswise against the bark for a resting position. Safety and Rigging Climbing "co-dominant" or split trees requires extra caution