Since it's a relatively flexible thing, I'll suggest having the majority of the thrusters be at the front as a pulling or towing mechanic to drag along the entire length of its mass to wherever the head is pointing. It's also make for a nice frill or mane of thruster fire if you're into that sort of thing. Might also end up looking sort of like a comet if the thrusters shrink in size as they go back.

Some minor thrusters will be required along the length of the body to minimize tension, sheer, bending, and torsion stresses and to make it seem more like it's 'swimming' through space if that's your intension.

Thrusters at the way back will be useless for a flexible object, unless you mean for it to have the ability to reverse but it may be more efficient for it to simply focus all of its power into forward motion and turning its head if it does want to go back somewhere.

Since it's a relatively flexible thing, I'll suggest having the majority of the thrusters be at the front as a pulling or towing mechanic to drag along the entire length of its mass to wherever the head is pointing. It'd also make for a nice frill or mane of thruster fire if you're into that sort of thing. Might also end up looking sort of like a comet if the thrusters shrink in size as they go back.

Some minor thrusters will be required along the length of the body to minimize tension, sheer, bending, and torsion stresses and to make it seem more like it's 'swimming' through space if that's your intension.

Thrusters at the way back will be useless for a flexible object, unless you mean for it to have the ability to reverse but it may be more efficient for it to simply focus all of its power into forward motion and turning its head if it does want to go back somewhere.