The Yak has Russian 'seat pan' chutes. I don't know if they'd work, but they are better than nothing. Does anyone have experience of seat pan chutes for a Chippy? How much, what body weight will they take etc?
If you take pax, you'd need 2. Just imagine you broke the plane with too much 'G' and your pax didn't have a chute. Would you use yours anyway? Could you live with yourself afterwards if you did?
And what if the pax has a chute. Being unfamiliar with the aircraft and environment they would take longer than you to decide to go even with you shouting at them to jump, and they'd take longer to actually climb out. Would you wait 'till they'd gone or shout to them to jump then 'every man (or woman) for themselves' ?
SSD