Machines can do a good job forcing the sperm out, however, you'll quickly run into diminishing quality. The body is smart to not keeping giving out the good stuff. However, with a skilled worker you can avoid this problem and keep pumping out good quality. Simply trick the mind into thinking it's giving a success breeding with each orgasm; it will take more work but the thickness and taste keep that high quality.

Only several more buckets Mr. Gator, then you're free to go. Try to keep consciousness.