I've dialed back my use of gelatin because I find it kind of a bitch to prepare (non-hydrolyzed) but it definitely helped my body comp while I was taking it daily (not post workout). WAPF has some nice things to say about it:
"The "sparing" effects of gelatin on protein were of particular interest to many early researchers. By "sparing protein," they meant that the body is less likely to cannabilize the protein stored in its own muscles, a common occurrence during fasting or during rapid weight loss from illness. Gelatin thus helps keep the body in what today’s nutritionists call "nitrogen balance.""
Read Ray Peat's stuff on Gelatin and also Lita Lee's, if you have done so already. They will corroborate and expand on your approach. If you put it in cold juice or water, it will clump up. That's alright, you can eat it. Another thing that you might want to consider is making an aspic with it.