Chucklehead,
By 'twin Huey' you may either be a 212 or 412 driver, but both should have vertical departure options to cover your situation. When coming up vertically you should always back up; not 'sometimes slightly' as you describe unless you have a suitable runway ahead for a SE landing. Essentially from a 4ft hover smoothly increase power and at 35ft commence moving backwards to keep the helipad in view, until at TDP you rotate and gain forward speed.
Best described in the appropriate supplement for your flight manual along with appropriate performance graphs: elevated helipad procedures give the best description but may not be suitable for a ground level operation.
Since a failure would require forward movement to regain the pad that you departed from, VRS should not be an issue.