You can buy a sidewinder at literally every station bigger than an outpost, and park the Anaconda there. At that point, no chance to lose the anaconda, and your friend can try it freely. He can also try the single player missions at no risk, and hopefully they will be packaged into a free to play demo anyway.
Oh, before I forget: this is technically against ED's EULA. You can't "rent, lease, sub-license, loan, exploit for profit or gain, copy, modify, adapt, merge, translate, reverse engineer, decompile, disassemble or create derivative works based on the whole or any part of the Game or use, reproduce, distribute, translate, broadcast, publicly perform, store in a retrieval system or otherwise deal in the Game or any part thereof in any way."
Of course, not all of those stand everywhere. I believe local laws in my country explicitly allow me to reverse engineer anything regardless of the consent of the copyright holder, for example, and many kinds of derivative work (parody, for example) also can be created without authorization.