It’s important to choose right vigour of variety for the size of the space you want to cover. Don’t be too impatient for it to grow quickly, because a tall, fast growing rose can soon become a menace as it romps away out of your reach.
Another issue with very quick, tall growing varieties is that they won’t produce as many flowers for you. The reason for this is you’ll have to keep cutting it back to contain it within the space available.
Some climbing varieties like ‘Compassion’ have very stiff growth making them more difficult to fan out. In that case keep the plant in an upright position where it doesn’t need a lot of width to cover either side.
If your climber/rambler is producing great long shoots during the summer months, it’s ideal to tie them in so they don’t break in the wind.