no. a bathmate would not help with the protocol outlined in the document he linked. heres why.
bathmate works with a vacuum force that sucks from the outside. it creates a force that stretches and expands the outer layer of skin and bloats the tissue with excess blood. largely useless in the grand scheme of actual lasting tissue growth
relaxin 2, Prostaglandin E1, cialis, the other potentiators work by increasing blood flow from the tissue inside of the penis and create a pressurized balloon effect.
even hanging would be useless as its been tried and proven ineffective with this method of chemical growth. it takes time to heal and the penis will be very sore. the only thing that would work to sure fire increase blood flow would be pre injection rolling which would still hurt a fucking lot given the frequent injections and an all day stretching device with low tension. the key would be to recover to the max in between treatments instead of causing additional soreness and healing.
a good start would be like ykll, mk677 for hgh additional hgh production or 2-3 iu hgh/day, cialis, prostaglandin E1 and then the relaxin 2 as a potentiator, and dht + clamp device.