The isc double-sheave redirect pulley is nice. It’s only good for that, and is the smoothest I’ve tried. You can also use a pinto and a biner, with one leg in the pulley and one leg between the ears of the pulley, on the biner.
Another solution is the m-rig, which doesn’t require retrieval. Are you familiar with this technique?
Ddrt or Drt? eithe way. Lock it off and go srt or attach a whole new ddrt system to that drt, or recrotch another system and abandon the 1st or keep it handy. I had 3 seperate ropes in this tree. SRT, ddrt, fall arrestr a short Ddrt and lanyard. Limb failure should be only concern, falling slipping with or without a saw in your hand shouldn't. Ddrt is nice it's the flse crotch or redirect you take with you. And if you can tether another rope to it to retrieve when back into position or centre tip or whatever. What trees, what work, what tools n rope u got, what climb style - u climb the tree or the rope. Ask the right questions u get the best answers from us and uself.