I'm sorry, I should have been more detailed. I use a piece of PVC that has a smaller diameter than the support pole, and I take it out after using it to open a nice deep hole. Then the plant pole goes in the hole.
I use a pole and a cage on my large tomatoes. The cage offers protection from the dogs when the plants are small, and some support for the branches of bushy plants. I take the suckers off about half of my plants early on, later in the season I'm usually too busy to give them that kind of attention, plus I get some late fall tomatoes off of suckers. I got two nice sized tomatoes off a Tropic plant in November last year.
Now that I have the thrip problem under control, and thus their Weapon of Mass Destruction Tomato Spotted Wilt Virus; different blights are the most common disease problem for tomatoes around here, and they come mostly from the roots. So, cutting suckers isn't really a disease issue for me. Oh, I will continue to plant some Tomato Spotted Wilt Virus resistant plants every year, but removing some trees that were serving as reservoirs for the thrips made that problem controllable.