Mako

One thing you might want to try is having your trapped kerbal get out of the cockpit at apoapsis and then push against the front of his spaceship using his EVA suit. Since you're already so close to entering the atmosphere, you'll probably be able to slow his ship down enough to drop his periapsis into the atmosphere. This way you won't even need to have a second ship rendezvous. Be sure to point the ship prograde before getting out and pushing. Also, make sure to get back in after pushing to check if the periapsis has dropped enough. Then, just sit back and let the atmosphere do all the work. If you do want to attempt the rendezvous, make the second ship's apoapsis higher by a decent amount by burning prograde at it's periapsis and then wait/timewarp until your closest approach becomes very small. Make sure you set the first ship as your target, and when you reach your closest approach time burn so that your relative velocity to the first ship is zero. Then it's a matter of burning towards the first ship so you approach it and then burning again to make your relative velocity zero when you get close. It may take a few tries to really get the hang of it. That's why I mentioned the first method of getting out and pushing. Rendezvous are made a whole lot easier with RCS.

Long time listener, first time caller: Since flying your Dunebug II on a rescue for poor Jeb whom I left stranded in a command pod on Duna I have been very interested in your crafts. I want to say thank you. To answer your question: I just attempted to fly Munbug VI for the first time. I'm running 0.20.2 and having a heck of a time reaching a stable Kerbin orbit even at 75k. In fact, after struggling to reach orbit I don't seem to have enough Delta-V in the third stage to reach the Mun. I'm not a great pilot, but I feel like I am adequate enough to at least make it to orbit. I can't offer any more information than that I'm afraid. On a side note (and I'm not sure if it's related or not), The structural panel fairings do not seem to want to jettison very nicely. Having not tried Munbug VI on earlier builds, I have no previous experiences with the action of the fairings to say if this is my screw up or something that changed with 0.20.2.