I agree they both look to be males. The first definitely is. The second one also appears to be based on the tail length but a straight on shot of the tail (similar to the first photo) would tell better.
I tried to take the best shot I could of the 2nd tortoises' tail, but he/she was being stubborn. These are the best I got. I hope it helps! The last pic may look a little weird. The tortoise was releasing some urates and I decided to pick him up and take a picture, all while hoping he wouldn't pee on me! His little tail has some aspen pieces and urates in there because I just picked him up by surprise.